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Vakinankaratra, Madagascari
Regional Level Types
VakinankaratraRegion
MadagascarCountry

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Key
Locality type:
Largest Settlements:
PlacePopulation
Antsirabe186,253 (2018)
Antanifotsy70,626 (2018)
Faratsiho37,563 (2018)
Betafo29,785 (2018)
Ambatolampy28,461 (2018)
Miandrarivo27,000 (2018)
Other Languages:
French:
Vakinankaratra, Madagascar
German:
Vakinankaratra, Madagaskar
Italian:
Regione di Vakinankaratra, Madagascar
Malagasy:
Vakinankaratra, Madagasikara
Russian:
Вакинанкаратра, Мадагаскар
Simplified Chinese:
瓦卡南卡拉特拉, 马达加斯加
Spanish:
Región de Vakinankaratra, Madagascar
Arabic:
فاكينانكارترا, مدغشقر
Bengali:
ভাকিনাঙ্কারাত্র, মাদাগাস্কার
Breton:
Vakinankaratra, Madagaskar
Bulgarian:
Вакинанкарача, Мадагаскар
Catalan:
Vakinankaratra, Madagascar
Cebuano:
Vakinankaratra Region, Madagascar
Danish:
Vakinankaratra, Madagaskar
Dutch:
Vakinankaratra, Madagaskar
Esperanto:
Vakinankaratra, Madagaskaro
Farsi/Persian:
واکینانکاراترا, ماداگاسکار
Finnish:
Vakinankaratra, Madagaskar
Greek:
Βακινανκαράτρα, Μαδαγασκάρη
Gujarati:
વકિનંકરાત્રા, મડાગાસ્કર
Hindi:
वाकीनंकरत्र, मेडागास्कर
Indonesian:
Vakinankaratra, Madagaskar
Japanese:
ヴァキナカラチャ地域圏, マダガスカル
Kannada:
ವಕಿಕಂಕರಾತ್ರಾ, ಮಡಗಾಸ್ಕರ್
Korean:
바키낭카라트라 구, 마다가스카르
Latvian:
Vakinankaratra, Madagaskara
Lithuanian:
Vakinankaratra, Madagaskaras
Malay:
Vakinankaratra, Madagaskar
Marathi:
वकिन्क्रात्र, मादागास्कर
Minnan / Hokkien-Taiwanese:
Vakinankaratra Khu
Norwegian:
Vakinankaratra, Madagaskar
Polish:
Vakinankaratra, Madagaskar
Portuguese:
Vakinankaratra, Madagáscar
Romanian:
Regiunea Vakinankaratra, Madagascar
Serbo-Croatian:
Regija Vakinankaratra, Madagaskar
Sinhalese:
වකිනන්කරත්‍රා, මැඩගස්කරය
Swahili:
Vakinankaratra, Madagaska
Swedish:
Vakinankaratraregionen, Madagaskar
Tamil:
வாக்கினங்கரட்றா, மடகாசுகர்
Telugu:
వాకినంకారట్రా, మడగాస్కర్
Thai:
วาคินานคารัทนา, ประเทศมาดากัสการ์
Turkish:
Vakinankaratra, Madagaskar
Ukrainian:
Вакінанкаратра, Мадагаскар
Urdu:
والینانکاراترا, مڈغاسکر
Vietnamese:
Vakinankaratra, Madagascar


Vakinankaratra is the name of a region situated in the main Highland of Madagascar. Many foreign papers on minerals or labels on minerals from this region have often referred to this region as "Antsirabe-Betafo region".
Minerals from a large number of localities are often brought to the nearest market place where they are sold as gem material or minerals for collections. Some of the main marketplaces for minerals in Vakinankaratra are listed here: Ibity market, Sahanivotry, Ambohimanambola, Mahaiza and the town Antsirabe which also is a center for mineral trade. These names often occurs on labels but are not strictly localities just marketplaces.

Select Mineral List Type

Standard Detailed Gallery Strunz Dana Chemical Elements

Commodity List

This is a list of exploitable or exploited mineral commodities recorded from this region.


Mineral List

Mineral list contains entries from the region specified including sub-localities

145 valid minerals. 6 (TL) - type locality of valid minerals. 2 (FRL) - first recorded locality of unapproved mineral/variety/etc. 2 erroneous literature entries.

Rock Types Recorded

Note: data is currently VERY limited. Please bear with us while we work towards adding this information!

Rock list contains entries from the region specified including sub-localities

Select Rock List Type

Alphabetical List Tree Diagram

Detailed Mineral List:

'Aeschynite Group'
Formula: AD2O6
Reference: Knut Edvard Larsen collection # M-519
Aeschynite-(Y)
Formula: (Y,Ln,Ca,Th)(Ti,Nb)2(O,OH)6
Description: Pseudo-hexagonal crystals (described as priorite, analyzed by Mignot)
Reference: Behier, J. (1958): Contribution ã la mineralogie de Madagascar (Deuxième partie). Travaux du Bureau Géologique, Service Géologique Tananarive, p.92 + fig 15, planche 2.; Besairie H. (1966): Les Gites Minéraux de Madagascar. Annales Géologiques de Madagascar, Tananarive. 34, p. 71
Albite
Formula: Na(AlSi3O8)
Localities: Reported from at least 22 localities in this region.
Reference: Lefevre & Thomas (1998): Les pegmatites de la vallée de la Sahatany, Madagascar. La Règne Minéral, 19, 15-28
Albite var. Cleavelandite
Formula: Na(AlSi3O8)
Localities: Reported from at least 6 localities in this region.
Reference: Wilson, W.E. (1989) The Anjanabonoina pegmatite, Madagascar. Mineralogical Record 20: 191-200
'Albite-Anorthite Series'
Reference: Lacroix, A. (1922): Mineralogie de Madagascar, Tome I. Géologie-Minéralogie descriptive. A.Challamel (Éditeur), Paris. p 601.
Allanite-(Ce)
Formula: {CaCe}{Al2Fe2+}(Si2O7)(SiO4)O(OH)
Reference: Larsen, K. E. (2003): Mineralene i Sahatany pegmatittfelt, Madagaskar. Bergverksmuseets skrifter 25, 5-18 (in Norwegian)
'Allanite Group'
Formula: {A12+REE3+}{M3+2M32+}(Si2O7)(SiO4)O(OH)
Reference: Behier, J. (1963): Carte mineralogique de Madagascar. Archive Service Géologique Madagascar. A 1871
Almandine
Formula: Fe2+3Al2(SiO4)3
Reference: Praszkier, T. (2010): Ialamaitana Pegmatites. Mineralogical Record. 41, 266
'Almandine-Pyrope Series'
Reference: Rakotondrazafy, A.F.M., Giuliani, G., Ohnenstetter, D., Fallick, A.E., Rakotosamizanany, S., Andriamamonjy, A., Ralantoarison, T., Razanatseheno, M., Offant, Y., Garnier, V., Maluski, H., Dunaigre, C., Schwarz, D., and Ratrimo, V. (2008): Ore Geology Reviews 34, 134-154.
'Almandine-Spessartine Series'
Localities: Reported from at least 10 localities in this region.
Reference: Moore, T. (1998): What's New in Minerals. Mineralogical Record. 29, p. 132
Amblygonite
Formula: LiAl(PO4)F
Reference: Morteani, G. & Ackermand, D. (2006): Mineralogy, geochemistry and petrology of an amphibolite-facies aluminium-phosphate and borosilicate (APB)-bearing quartzite from the Mesoproterozoic Itremo Group (Central Madagascar). Neues Jahrbuch. Mineral. Abh., 182, 123-148
Amesite
Formula: Mg2Al(AlSiO5)(OH)4
Reference: Lefevre & Thomas (1998): Les pegmatites de la vallée de la Sahatany, Madagascar. La Règne Minéral, nr 19, 15-28
Anatase
Formula: TiO2
Description: Behier (1960) reports find of anatase from the region of Ambatofotsikley
Reference: Behier, J. (1963): Carte mineralogique de Madagascar. Archive Service Géologique Madagascar. A 1871
Anatase var. Xanthitane
Formula: TiO2
Reference: Besairie H. (1966): Les Gites Minéraux de Madagascar. Annales Géologiques de Madagascar, Tananarive. 34, p.71 + 390
Andalusite
Formula: Al2(SiO4)O
Reference: Behier, J. (1963): Carte mineralogique de Madagascar. Archive Service Géologique Madagascar. A 1871
'Andradite-Grossular Series'
Reference: Karel Bal Collection
Anhydrite
Formula: CaSO4
Reference: Morteani, G. & Ackermand, D. (2006): Mineralogy, geochemistry and petrology of an amphibolite-facies aluminium-phosphate and borosilicate (APB)-bearing quartzite from the Mesoproterozoic Itremo Group (Central Madagascar). Neues Jahrbuch. Mineral. Abh., 182, 123-148
Annite
Formula: KFe2+3(AlSi3O10)(OH)2
Colour: Black
Description: Occurs in large plates.
Reference: De Vito et al (2006): Nb-Ti-Ta oxides in the gem-mineralized and "hybrid" Anjanabonoina granitic pegmatite, central Madagascar: A record of magmatic and postmagmatic events. Canadian Mineralogist. 44: 87-103.; De Vito, C., Pezzotta, F., Ferrini, V., and Aurisicchio, C. (2006): Nb-Ti-Ta oxides in the gem-mineralized and "hybrid" Anjanabonoina granitic pegmatite, central Madagascar: A record of magmatic and postmagmatic events. Canadian Mineralogist 44, 87-103.
Anorthite
Formula: Ca(Al2Si2O8)
Reference: Rakotondrazafy, A.F.M., Giuliani, G., Ohnenstetter, D., Fallick, A.E., Rakotosamizanany, S., Andriamamonjy, A., Ralantoarison, T., Razanatseheno, M., Offant, Y., Garnier, V., Maluski, H., Dunaigre, C., Schwarz, D., and Ratrimo, V. (2008): Ore Geology Reviews 34, 134-154.; Giuliani, G.; Groat, L.A.; Fallick, A.E.; Pignatelli, I.; Pardieu, V. (2020) Ruby Deposits: A Review and Geological Classification. Minerals 10, 597.
Anorthite var. Bytownite
Formula: (Ca,Na)[Al(Al,Si)Si2O8]
Reference: Rakotondrazafy, A.F.M., Giuliani, G., Ohnenstetter, D., Fallick, A.E., Rakotosamizanany, S., Andriamamonjy, A., Ralantoarison, T., Razanatseheno, M., Offant, Y., Garnier, V., Maluski, H., Dunaigre, C., Schwarz, D., and Ratrimo, V. (2008): Ore Geology Reviews 34, 134-154.; Giuliani, G.; Groat, L.A.; Fallick, A.E.; Pignatelli, I.; Pardieu, V. (2020) Ruby Deposits: A Review and Geological Classification. Minerals 10, 597.
Anorthite var. Labradorite
Formula: (Ca,Na)[Al(Al,Si)Si2O8]
Reference: Rakotondrazafy, A.F.M., Giuliani, G., Ohnenstetter, D., Fallick, A.E., Rakotosamizanany, S., Andriamamonjy, A., Ralantoarison, T., Razanatseheno, M., Offant, Y., Garnier, V., Maluski, H., Dunaigre, C., Schwarz, D., and Ratrimo, V. (2008): Ore Geology Reviews 34, 134-154.; Giuliani, G.; Groat, L.A.; Fallick, A.E.; Pignatelli, I.; Pardieu, V. (2020) Ruby Deposits: A Review and Geological Classification. Minerals 10, 597.
Anthophyllite
Formula: ☐{Mg2}{Mg5}(Si8O22)(OH)2
Reference: Lacroix, A. (1913) Minéralogie de La France et de ses colonies. Tome Cinq, Deuxième Supplément. Librairie Polytechnique, Paris 1913, p. 4.
'Apatite'
Formula: Ca5(PO4)3(Cl/F/OH)
Localities: Reported from at least 8 localities in this region.
Colour: yellow transparent
Description: A. Lacroix (1922) describes large crystals from this area
Reference: Lacroix, A. (1922): Mineralogie de Madagascar, Tome I. Géologie-Minéralogie descriptive. A.Challamel (Éditeur), Paris. p 353
Aragonite
Formula: CaCO3
Reference: Behier, J. (1963): Carte mineralogique de Madagascar. Archive Service Géologique Madagascar. A 1871
'Asbestos'
Reference: - Behier, J. (1963): Carte mineralogique de Madagascar. Archive Service Géologique Madagascar. A 1871
'Ashanite'
Formula: (Nb,Ta,U,Fe,Mn)4O8
Reference: Ranorosoa, N. (1986): Etude mineralogique des pegmatites du champ de la Sahatany, Madagascar. These de Doctorat de l`Universite Paul Sabatier, Toulouse
Augelite
Formula: Al2(PO4)(OH)3
Reference: Morteani, G. & Ackermand, D. (2006): Mineralogy, geochemistry and petrology of an amphibolite-facies aluminium-phosphate and borosilicate (APB)-bearing quartzite from the Mesoproterozoic Itremo Group (Central Madagascar). Neues Jahrbuch. Mineral. Abh., 182, 123-148
Augite
Formula: (CaxMgyFez)(Mgy1Fez1)Si2O6
Reference: G. S. Chapus (1951): Antsirabe. Passé, présent, avenir. Tananarive. Imprimerie Lutherienne. p. 49-50.
Autunite
Formula: Ca(UO2)2(PO4)2 · 10-12H2O
Reference: Behier, J. (1963): Carte mineralogique de Madagascar. Archive Service Geologique A. 1871.
Axinite-(Mn)
Formula: Ca2Mn2+Al2BSi4O15(OH)
Description: Knut Edvard Larsen collection, identified by XRD at MGM, Oslo 1998.
Reference: Larsen, K. E. (2003): Mineralene i Sahatany pegmatittfelt, Madagaskar. Bergverksmuseets skrifter 25, 5-18 (in norwegian)
Baryte
Formula: BaSO4
Reference: Ranorosoa, N. (1986): Etude mineralogique des pegmatites du champ de la Sahatany, Madagascar. These de Doctorat de l`Universite Paul Sabatier, Toulouse
Béhierite (TL)
Formula: (Ta5+,Nb5+)(BO4)
Localities: Reported from at least 6 localities in this region.
Habit: Octahedral crystals
Colour: Grayish-pink
Reference: Mrose, M.E. & Rose jr, J. (1961): Behierite, (Ta, Nb)BO4, a new mineral from Manjaka, Madagascar. Geol.Soc.Am, Abstracts 1961 Ann. Meetings, p 111A
Berlinite
Formula: AlPO4
Reference: Morteani, G. & Ackermand, D. (2006): Mineralogy, geochemistry and petrology of an amphibolite-facies aluminium-phosphate and borosilicate (APB)-bearing quartzite from the Mesoproterozoic Itremo Group (Central Madagascar). Neues Jahrbuch. Mineral. Abh., 182, 123-148
Bertrandite
Formula: Be4(Si2O7)(OH)2
Reference: Knut Edvard Larsen collection # MM-1563 ( Identified by xrd at Natural History Museum, Oslo)
Beryl
Formula: Be3Al2(Si6O18)
Localities: Reported from at least 61 localities in this region.
Colour: rose, green, blue
Reference: Lacroix, A. (1912): Sur quelques minéraux des pegmatites du Vakinankaratra (Madagascar). Bulletin de la Société française de Minéralogie, Paris 35 , 76-78
Beryl var. Alkali-beryl
Formula: Be3Al2(Si6O18)
Reference: Lacroix, A. (1922): Mineralogie de Madagascar, Tome I. Géologie-Minéralogie descriptive. A.Challamel (Éditeur), Paris. 624p (p.545-)
Beryl var. Aquamarine
Formula: Be3Al2Si6O18
Reference: Argulie M specimen
Beryl var. Morganite
Formula: Be3Al2(Si6O18)
Reference: Wilson, W. E. (1989) The Anjanabonoina pegmatite, Madagascar. Mineralogical Record 20: 191-200
'Biotite'
Formula: K(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
Localities: Reported from at least 32 localities in this region.
Reference: Ranorosoa, N. (1986): Etude mineralogique des pegmatites du champ de la Sahatany, Madagascar. These de Doctorat de l`Universite Paul Sabatier, Toulouse.
Bismite
Formula: Bi2O3
Reference: Ranorosoa, N. (1986): Etude mineralogique des pegmatites du champ de la Sahatany, Madagascar. These de Doctorat de l`Universite Paul Sabatier, Toulouse.
Bismuth
Formula: Bi
Localities: Reported from at least 10 localities in this region.
Habit: small cleavable masses
Reference: Lacroix, A. (1922): Mineralogie de Madagascar, Tome I. Géologie-Minéralogie descriptive. A.Challamel (Éditeur), Paris, p.156; Wilson, W. E. (1989) The Anjanabonoina pegmatite, Madagascar. Mineralogical Record 20: 191-200
Bismuthinite
Formula: Bi2S3
Reference: Ranorosoa, N. (1986): Etude mineralogique des pegmatites du champ de la Sahatany, Madagascar. These de Doctorat de l`Universite Paul Sabatier, Toulouse.
Bismutite
Formula: (BiO)2CO3
Localities: Reported from at least 11 localities in this region.
Reference: Behier, J. (1963): Carte mineralogique de Madagascar. Archive Service Gélogique Madagascar. A 1871; Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 261.
Bityite (TL)
Formula: LiCaAl2(AlBeSi2O10)(OH)2
Localities: Reported from at least 8 localities in this region.
Habit: pseudohexagonal barrelshaped aggregates with curved top (polysyntetic twins)up to 2 mm long; fine lamelles
Colour: white; whith-yellowish
Description: The typematerial of bityite was found in a pegmatite dike situated about 300 m N of the Maharitra workings (Behier (1960) Found on tourmaline or quartz
Reference: Lacroix, A. (1922): Mineralogie de Madagascar, Tome I. Géologie-Minéralogie descriptive. A.Challamel (Éditeur), Paris. pp 398-400 + planche 18 / Behier, J. (1960): Contribution á la Minéralogie de Madagascar. Annales Géologiques de Madagascar XXIX, Tananarive, 78p.
Boralsilite
Formula: Al16B6Si2O37
Reference: Novák, M., Cempírek, J., Gadas, P., Škoda, R., Galiová, M. V., Pezzotta, F. and Groat, L. A. (2015): Boralsilite and Li, Be-bearing "Boron Mullite" Al8B2Si2O19, Breakdown products of spodumene from the Manjaka pegmatite, Sahatany valley, Madagascar. Canadian Mineralogist. 53: 357-374
Calcite
Formula: CaCO3
Localities: Reported from at least 8 localities in this region.
Reference: Lacroix, A. (1912): Sur quelques minéraux des pegmatites du Vakinankaratra (Madagascar). Bulletin de la Société française de Minéralogie, Paris 35 , 76-78
Cassiterite
Formula: SnO2
Localities: Reported from at least 6 localities in this region.
Reference: Ranorosoa, N. (1986): Etude mineralogique des pegmatites du champ de la Sahatany, Madagascar. These de Doctorat de l`Universite Paul Sabatier, Toulouse Toulouse 3, no. 86 TOU3 0210, Toulouse, 240 p.
Celestine
Formula: SrSO4
Reference: Morteani, G. & Ackermand, D. (2006): Mineralogy, geochemistry and petrology of an amphibolite-facies aluminium-phosphate and borosilicate (APB)-bearing quartzite from the Mesoproterozoic Itremo Group (Central Madagascar). Neues Jahrbuch. Mineral. Abh., 182, 123-148
Cesiokenopyrochlore (TL)
Formula: □Nb2(O,OH)6(Cs,◻) (◻ ∼ 0.20)
Type Locality:
Reference: Agakhanov, A.A., Kasatkin, A.V., Britvin, S.N., Siidra, O.I., Pautov, L.A., Pekov, I.V. and Karpenko, V.Y. (2017) Cesiokenopyrochlore, IMA 2016-104. CNMNC Newsletter No. 36, April 2017, page 406; Mineralogical Magazine, 81, 403–409.
'Chabazite'
Reference: Lacroix, A. (1922): Mineralogie de Madagascar, Tome I. Géologie-Minéralogie descriptive. A.Challamel (Éditeur), Paris. p 601.
Chalcocite
Formula: Cu2S
Reference: Behier, J. (1963): Carte mineralogique de Madagascar. Archive Service Géologique Madagascar. A 1871
Chalcopyrite
Formula: CuFeS2
Reference: Behier, J. (1963): Carte mineralogique de Madagascar. Archive Service Géologique Madagascar. A 1871
Chevkinite-(Ce)
Formula: (Ce,La,Ca,Th)4(Fe2+,Mg)(Fe2+,Ti,Fe3+)2(Ti,Fe3+)2(Si2O7)2O8
Description: Samples labelled "chevkinite-(Ce) has been showed to be allanite-(Ce). See Larsen (2003)
Reference: Lefevre, M. & Thomas, L. (1998): Les pegmatites de la vallée de la Sahatany, Madagascar. Le Règne Minéral no 19, 15-28
'Chlorite Group'
Reference: Lacroix, A. (1922): Mineralogie de Madagascar, Tome I. Géologie-Minéralogie descriptive. A.Challamel (Éditeur), Paris. 624p (p.582)
'Chrome-Spinel (of Dana)'
Description: Inclusions in corundum.
Reference: Rakotondrazafy, A.F.M., Giuliani, G., Ohnenstetter, D., Fallick, A.E., Rakotosamizanany, S., Andriamamonjy, A., Ralantoarison, T., Razanatseheno, M., Offant, Y., Garnier, V., Maluski, H., Dunaigre, C., Schwarz, D., and Ratrimo, V. (2008): Ore Geology Reviews 34, 134-154.
Chrysoberyl
Formula: BeAl2O4
Habit: Grains
Colour: Colorless
Description: As small colorless grains associated with elbaite
Reference: Ranorosoa, N. (1986): Etude mineralogique des pegmatites du champ de la Sahatany, Madagascar. These de Doctorat de l`Universite Paul Sabatier, Toulouse Toulouse 3, no. 86 TOU3 0210, Toulouse, 240 p.
Chrysocolla
Formula: Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
Reference: Behier, J. (1963): Carte mineralogique de Madagascar. Archive Service Géologique Madagascar. A 1871
Clinochlore
Formula: Mg5Al(AlSi3O10)(OH)8
Reference: Knut Edvard Larsen collection # M-160
Clinochlore var. Ripidolite
Formula: (Mg,Fe,Al)6(Si,Al)4O10(OH)8
Reference: Lacroix, A. (1922): Mineralogie de Madagascar, Tome I. Géologie-Minéralogie descriptive. A.Challamel (Éditeur), Paris; p 202
Clinohumite
Formula: Mg9(SiO4)4F2
Reference: Knut Edvard Larsen collection (# M-569 + M-576)
'Clinopyroxene Subgroup'
Reference: Giuliani, G.; Groat, L.A.; Fallick, A.E.; Pignatelli, I.; Pardieu, V. (2020) Ruby Deposits: A Review and Geological Classification. Minerals 10, 597.
Columbite-(Fe)
Formula: Fe2+Nb2O6
Localities: Reported from at least 6 localities in this region.
Reference: Knut Edvard Larsen collection, Identified at MGM, Oslo mars 1998 by H.J. Berg (XRD)
'Columbite-(Fe)-Columbite-(Mn) Series'
Localities: Reported from at least 12 localities in this region.
Reference: Wilson, W.E. (1989) The Anjanabonoina pegmatite, Madagascar. Mineralogical Record 20: 191-200
Columbite-(Mn)
Formula: Mn2+Nb2O6
Localities: Reported from at least 12 localities in this region.
Description: A. Lacroix (1912,1922) described columbite-(Mn)(Manganocolumbite) from Manjaka,using only visual means for analysis. Later von Knorring and Fadipe (1981)analyzes columbite-(Mn) from Manjaka and find that it is a tungstenian variety. Also as partially alteration of behierite (Pezzotta 2007)
Reference: Lacroix, A. (1922): Mineralogie de Madagascar, Tome I. Géologie-Minéralogie descriptive. A. Challamel (Éditeur), Paris. p 370/ Bull.Minéral. (1981), 104, p.496-507
'Columbite-(Mn)-Tantalite-(Mn) Series'
Description: See Pavel M. Kartashov comments on columbite-(Mn) in the caption of photo http://www.mindat.org/photo-114523.html.
Reference: Knut Edvard Larsen collection
'Columbite-Tantalite'
Localities: Reported from at least 11 localities in this region.
Reference: Behier, J. (1963): Carte mineralogique de Madagascar. Archive Service Gélogique Madagascar. A 1871
Cookeite
Formula: (Al2Li)Al2(AlSi3O10)(OH)8
Localities: Reported from at least 8 localities in this region.
Reference: Ranorosoa, N. (1986): Etude mineralogique des pegmatites du champ de la Sahatany, Madagascar. These de Doctorat de l`Universite Paul Sabatier, Toulouse
Cordierite
Formula: (Mg,Fe)2Al3(AlSi5O18)
Reference: Knut Edvard Larsen collection # M-210
Corundum
Formula: Al2O3
Localities: Reported from at least 7 localities in this region.
Reference: Lacroix, A. (1922): Mineralogie de Madagascar, Tome I. Géologie-Minéralogie descriptive. A.Challamel (Éditeur), Paris. p 251
Corundum var. Ruby
Formula: Al2O3
Reference: Giuliani, G., Fallick, A., Rakotondrazafy, M., Ohnenstetter, D., Andriamamonjy, A., Ralantoarison, T., Rakotosamizanany, S., Razanatseheno, M., Offant, Y., Garnier, V., Dunaigre, C., Schwarz, D., Mercier, A., Ratrimo, V., and Ralison, B. (2007): Mineralium Deposita 42, 251-270.; Giuliani, G.; Groat, L.A.; Fallick, A.E.; Pignatelli, I.; Pardieu, V. (2020) Ruby Deposits: A Review and Geological Classification. Minerals 10, 597.
Corundum var. Sapphire
Formula: Al2O3
Reference: Behier, J. (1963): Carte mineralogique de Madagascar. Archive Service Géologique Madagascar. A 1871
Cryptomelane
Formula: K(Mn4+7Mn3+)O16
Reference: Knut Edvard Larsen collection # M-539
Danburite
Formula: CaB2Si2O8
Localities: Reported from at least 13 localities in this region.
Reference: Lacroix, A. (1912): Sur quelques minéraux des pegmatites du Vakinankaratra (Madagascar). Bulletin de la Société française de Minéralogie, Paris 35 , 76-84
Diopside
Formula: CaMgSi2O6
Reference: Behier, J. (1963): Carte mineralogique de Madagascar. Archive Service Gélogique Madagascar. A 1871.
Dravite
Formula: Na(Mg3)Al6(Si6O18)(BO3)3(OH)3(OH)
Localities: Reported from at least 10 localities in this region.
Reference: Ranorosoa, N. (1986): Etude mineralogique des pegmatites du champ de la Sahatany, Madagascar. These de Doctorat de l`Universite Paul Sabatier, Toulouse.
'Dravite-Schorl Series'
Reference: De Vito et al (2006): Nb-Ti-Ta oxides in the gem-mineralized and "hybrid" Anjanabonoina granitic pegmatite, central Madagascar: A record of magmatic and postmagmatic events. Canadian Mineralogist. 44: 87-103.
'Dravite-Uvite Series'
Reference: Novák, M., Cempírek, J., Gadas, P., Škoda, R., Galiová, M. V., Pezzotta, F. and Groat, L. A. (2015): Boralsilite and Li, Be-bearing "Boron Mullite" Al8B2Si2O19, Breakdown products of spodumene from the Manjaka pegmatite, Sahatany valley, Madagascar. Canadian Mineralogist. 53: 357-374
Dumortierite
Formula: (Al,Fe3+)7(SiO4)3(BO3)O3
Reference: Morteani, G. & Ackermand, D. (2006): Mineralogy, geochemistry and petrology of an amphibolite-facies aluminium-phosphate and borosilicate (APB)-bearing quartzite from the Mesoproterozoic Itremo Group (Central Madagascar). Neues Jahrbuch. Mineral. Abh., 182, 123-148
Edenite
Formula: NaCa2Mg5(Si7Al)O22OH2
Reference: Lefevre, M. & Thomas, L. (1998): Les pegmatites de la vallée de la Sahatany, Madagascar. Le Règne Minéral no 19, 15-28
Elbaite
Formula: Na(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
Localities: Reported from at least 14 localities in this region.
Reference: Ranorosoa, N. (1986): Etude mineralogique des pegmatites du champ de la Sahatany, Madagascar. These de Doctorat de l`Universite Paul Sabatier, Toulouse
'Elbaite-Liddicoatite Series'
Reference: Dirlam, D.M., Laurs, B.M., Pezzotta, F., and Simmons, W.B. (2002): Liddicoatite tourmaline from Anjanabonoina, Madagascar. Gems and Gemology: 38: 28-52
Epidote
Formula: {Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Localities: Reported from at least 6 localities in this region.
Reference: Lacroix, A. (1922): Mineralogie de Madagascar, Tome I. Géologie-Minéralogie descriptive. A.Challamel (Éditeur), Paris; p 202
Euclase
Formula: BeAl(SiO4)(OH)
Reference: In Collection of Martin Slama, obtained from Jochen Hintze
Euxenite-(Y)
Formula: (Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6
Localities: Reported from at least 17 localities in this region.
Reference: Lacroix, A. (1922): Mineralogie de Madagascar, Tome I. Géologie-Minéralogie descriptive. A.Challamel (Éditeur), Paris. 624p , p 379
Evansite
Formula: Al3(PO4)(OH)6 · 6H2O
Reference: Behier, J. (1963): Carte mineralogique de Madagascar. Archive Service Géologique Madagascar. A 1871
'Faratsihite' (FRL)
Type Locality:
Habit: massive
Colour: white creme
Description: The typematerial of the now discredited faratshite was found in a roadcut about 10 km from Faratsiho on the road to Sambaina. It was found in an altered volcanique rock (basalt or trachyte)as an elliptical mass of 2 x 1 meter
Reference: Behier, J. (1960): Contribution á la Minéralogie de Madagascar. Annales Géologiques de Madagascar XXIX, Tananarive.
'Fayalite-Forsterite Series'
Reference: Behier, J. (1963): Carte mineralogique de Madagascar. Archive Service Géologique Madagascar. A 1871
'Feldspar Group'
Localities: Reported from at least 7 localities in this region.
Reference: Rakotoarison, W. (1964): Les pegmatites de la Sahatany. Archive du Service Géologique Madagascar. A.1983, p.1-39.
'Feldspar Group var. Perthite'
Reference: Lacroix, A. (1922): Mineralogie de Madagascar, Tome I. Géologie-Minéralogie descriptive. A.Challamel (Éditeur), Paris. 624p (p.568)
'Fergusonite'
Reference: Behier, J. (1963): Carte mineralogique de Madagascar. Archive Service Géologique Madagascar. A 1871
Fergusonite-(Y)
Formula: YNbO4
Reference: Rob Lavinsky specimen
Fersmite
Formula: (Ca,Ce,Na)(Nb,Ta,Ti)2(O,OH,F)6
Reference: Pezzotta, F. (1999): Madagaskar- Da Paradies der Mineralien und Edelsteine. Extra Lapis 17. 56-59
Feruvite ?
Formula: Ca(Fe2+)3MgAl5(Si6O18)(BO3)3(OH)3(OH)
Description: No published analysis or other information. Samples visually identical to samples sold as feruvite in mineral shows has showed to be dravite.(K.E.Larsen commment des 2011)
Reference: Gunnar Färber, Samswegen, 2005
Fluorapatite
Formula: Ca5(PO4)3F
Reference: Lacroix, A. (1912): Sur quelques minéraux des pegmatites du Vakinankaratra (Madagascar). Bulletin de la Société française de Minéralogie 35 , 76-84
Fluorapatite var. Mn-bearing Fluorapatite
Formula: (Ca,Mn2+)5(PO4)3(F,Cl,OH) or Ca5([P,Mn5+]O4)3(F,Cl,OH)
Colour: blue; Prusse blue
Description: A. Lacroix (1912) suggest that the blue tourmaline mentioned by Duparc et al(1910) is a misnomer for "manganapatite" which occured abundantly at the locality.
Reference: Lacroix, A. (1912): Sur quelques minéraux des pegmatites du Vakinankaratra (Madagascar). Bulletin de la Société française de Minéralogie 35 , 76-84
Fluor-elbaite
Formula: Na(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3F
Reference: Ertl, A., Hughes, J. M., Prowatke, S., Ludwig, T., Prasad, P. S. R., Brandstätter, F., Körner, W., Schuster, R., Pertlik, F. and Marschall, H. (2006): Tetrahedrally coordinated boron in tourmalines from the liddicoatite-elbaite series from Madagascar: Structure, chemistry, and infrared spectroscopic studies. Am. Mineral. 91, 1847-1856. [F-dominant]
Fluorite
Formula: CaF2
Habit: massive
Reference: Lacroix, A. (1912): Sur quelques minéraux des pegmatites du Vakinankaratra (Madagascar). Bulletin de la Société française de Minéralogie, Paris 35 , 76-84
Fluor-liddicoatite (TL)
Formula: Ca(Li2Al)Al6(Si6O18)(BO3)3(OH)3F
Reference: Dunn, P. J., Appleman, D.E. & Nelen, J.E. (1977): Liddicoatite, a new calcium end-member of the tourmaline group. American Mineralogist 62, 1121-1124; Henry, D., Novák, M., Hawthorne, F.C., Ertl, A., Dutrow, B.L., Uher, P. & Pezzotta, F. (2011): Nomenclature of the tourmaline supergroup minerals. Am. Mineral., 96, 895-913.
'Fluor-uvite-Uvite Series'
Colour: green
Description: Found in the Marirana South pegmatite. One small fragment of green tourmaline was analyzed by (Ranorosoa 1986) and found to be an uvite
Reference: Ranorosoa N (1986): Etude mineralogique des pegmatites du champ de la Sahatany, Madagascar. These de Doctorat de l`Universite Paul Sabatier, Toulose
Forsterite
Formula: Mg2SiO4
Reference: Knut Edvard Larsen collection
Gahnite
Formula: ZnAl2O4
Reference: Behier, J. (1963): Carte mineralogique de Madagascar. Archive Service Géologique Madagascar. A 1871
'Garnet Group'
Formula: X3Z2(SiO4)3
Localities: Reported from at least 6 localities in this region.
Reference: Rakotoarison, W. (1964): Les pegmatites de la Sahatany. Archive du Service Géologique Madagascar. A.1983, p.1-39.
Gedrite
Formula: ☐{Mg2}{Mg3Al2}(Al2Si6O22)(OH)2
Reference: Behier, J. (1963): Carte mineralogique de Madagascar. Archive Service Géologique Madagascar. A 1871
Gibbsite
Formula: Al(OH)3
Reference: Wilson, W.E. (1989) The Anjanabonoina pegmatite, Madagascar. Mineralogical Record 20: 191-200
Goethite
Formula: α-Fe3+O(OH)
Localities: Reported from at least 9 localities in this region.
Reference: Ranorosoa, N. (1986): Etude mineralogique des pegmatites du champ de la Sahatany, Madagascar. These de Doctorat de l`Universite Paul Sabatier, Toulouse.
Gold
Formula: Au
Localities: Reported from at least 6 localities in this region.
Reference: Arliguie M collection (old label)
Goyazite
Formula: SrAl3(PO4)(PO3OH)(OH)6
Reference: Morteani, G. & Ackermand, D. (2006): Mineralogy, geochemistry and petrology of an amphibolite-facies aluminium-phosphate and borosilicate (APB)-bearing quartzite from the Mesoproterozoic Itremo Group (Central Madagascar). Neues Jahrbuch. Mineral. Abh., 182, 123-148
Graphite
Formula: C
Reference: Behier, J. (1963): Carte mineralogique de Madagascar. Archive Service Géologique Madagascar. A 1871
Grossular
Formula: Ca3Al2(SiO4)3
Reference: Adamo, I., Diella, V. & Pezzotta, F. (2012): Tsavorite and other Grossulars from Itrafo, Madagascar. Gems & Gemology. 48, 178-187
Grossular var. Tsavorite
Formula: Ca3Al2(SiO4)3
Reference: Adamo, I., Diella, V. & Pezzotta, F. (2012): Tsavorite and other Grossulars from Itrafo, Madagascar. Gems & Gemology. 48, 178-187
Hambergite
Formula: Be2(BO3)(OH)
Localities: Reported from at least 8 localities in this region.
Description: A. Lacroix (1912) mentions a single crystal that measured 9 x 5,5 x 3 cm
Reference: Lacroix, A. (1922): Mineralogie de Madagascar, Tome I. Géologie-Minéralogie descriptive. A.Challamel (Éditeur), Paris. p 338-39 ; Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 371.
Hastingsite
Formula: NaCa2(Fe2+4Fe3+)(Si6Al2)O22OH2
Reference: Behier, J. (1963): Carte mineralogique de Madagascar. Archive Service Géologique Madagascar. A 1871
Hematite
Formula: Fe2O3
Localities: Reported from at least 18 localities in this region.
Reference: Lacroix, A. (1922): Minéralogie de Madagascar. Tome 2. Minéralogie appliquée, lithologie. Augustin Challamel (Éditeur), Paris. p. 278-279.
'Hornblende'
Reference: Lacroix, A. (1922): Mineralogie de Madagascar, Tome I. Géologie-Minéralogie descriptive. A.Challamel (Éditeur), Paris. 624p (p 563)
Hübnerite
Formula: MnWO4
Reference: Demartin, F. et al (2001): Schiavinatoite,(Nb,Ta)BO4, the Nb analogue of behierite. European Journal of Mineralogy 13, 159-165
'Humite Group'
Reference: Noizet, G. (1963): Constitution géologique de la Région du Mont Ibity a Madagascar. Comptes rendues de la semaine géologique 1963. Annales géologiques de Madagascar.33, 129-132
Ilmenite
Formula: Fe2+TiO3
Description: Inclusions in corundum.
Reference: Rakotondrazafy, A.F.M., Giuliani, G., Ohnenstetter, D., Fallick, A.E., Rakotosamizanany, S., Andriamamonjy, A., Ralantoarison, T., Razanatseheno, M., Offant, Y., Garnier, V., Maluski, H., Dunaigre, C., Schwarz, D., and Ratrimo, V. (2008): Ore Geology Reviews 34, 134-154.; Giuliani, G.; Groat, L.A.; Fallick, A.E.; Pignatelli, I.; Pardieu, V. (2020) Ruby Deposits: A Review and Geological Classification. Minerals 10, 597.
'Ilmenorutile-Strüverite Series'
Reference: Knut Edvard Larsen collection # M-331
Ixiolite
Formula: (Ta,Nb,Sn,Fe,Mn)4O8
Reference: Ranorosoa, N. (1986): Etude mineralogique des pegmatites du champ de la Sahatany, Madagascar. These de Doctorat de l`Universite Paul Sabatier, Toulouse
Ixiolite var. Scandian Ixiolite (of von Knorring)
Formula: (Nb,Ta,Ti,Sc,Fe,Mn)4O8
Reference: v. Knorring, O. V., Sahama, Th.G. (1969): Scandian ixiolite from Mozambique and Madagascar. Bulletin of the Geological Society of Finland. 41: 75-77
Ixiolite var. Wolframoixiolite
Formula: (Nb,W,Ta,Fe,Mn,Nb)2O4
Description: (Mn1,63Ta1,10W0,79Nb0,50)4,02 O8 (Ranorosoa 1986)
Reference: Ranorosoa, N. (1986): Etude mineralogique des pegmatites du champ de la Sahatany, Madagascar. These de doctorat de L'Universite Paul Sabatier, Toulouse
Kaolinite
Formula: Al2(Si2O5)(OH)4
Reference: Rakotoarison, W. (1964): Les pegmatites de la Sahatany. Archive du Service Géologique Madagascar. A.1983, pp.1-39.
'K Feldspar'
Localities: Reported from at least 14 localities in this region.
Reference: Knut Edvard Larsen Collection # M-713
'K Feldspar var. Adularia'
Formula: KAlSi3O8
Reference: Behier, J. (1963): Carte mineralogique de Madagascar. Archive Service Géologique Madagascar. A 1871; Lacroix, A. (1922): Mineralogie de Madagascar, Tome I. Géologie-Minéralogie descriptive. A.Challamel (Éditeur), Paris. 624p (p 582)
Kyanite
Formula: Al2(SiO4)O
Reference: Morteani, G. & Ackermand, D. (2006): Mineralogy, geochemistry and petrology of an amphibolite-facies aluminium-phosphate and borosilicate (APB)-bearing quartzite from the Mesoproterozoic Itremo Group (Central Madagascar). Neues Jahrbuch. Mineral. Abh., 182, 123-148
Lazulite
Formula: MgAl2(PO4)2(OH)2
Reference: Behier, J. (1963): Carte mineralogique de Madagascar. Archive Service Geologique A. 1871; Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 910.
'Lepidolite'
Localities: Reported from at least 22 localities in this region.
Reference: Wilson, W.E. (1989) The Anjanabonoina pegmatite, Madagascar. Mineralogical Record 20: 191-200
'Liddicoatite'
Formula: Ca(Li2Al)Al6(Si6O18)(BO3)3(OH)3(OH)
Localities: Reported from at least 8 localities in this region.
Colour: green
Description: Determined from a green zone inside a pink elbaite (Ranorosoa 1986)
Reference: Ranorosoa, N. (1986): Etude mineralogique des pegmatites du champ de la Sahatany, Madagascar. These de doctorat de L'Universite Paul Sabatier, Toulouse
'Limonite'
Formula: (Fe,O,OH,H2O)
Reference: Lacroix, A. (1922): Mineralogie de Madagascar, Tome I. Géologie-Minéralogie descriptive. A. Challamel (Éditeur), Paris. p.155
Lithiophilite
Formula: LiMn2+PO4
Description: Pink, translucent, prismatic crystals (rare) or masses in albite. Often with an aureole of manganese oxides.
Reference: Ranorosoa, N. (1986): Etude mineralogique des pegmatites du champ de la Sahatany, Madagascar. These de doctorat de L'Universite Paul Sabatier, Toulouse
Londonite
Formula: (Cs,K,Rb)Al4Be4(B,Be)12O28
Localities: Reported from at least 6 localities in this region.
Habit: Up to 7 cm large crystals formed by dodecahedra {110} modified by deltoid dodecahedral{221}, tristetrahedral{211} and tetrahedral faces {111}
Colour: white to sulfur yellow
Reference: Simmons, W.B; Pezzotta,F; Falster, A.U & Webber, K.L.(2001): Londonite, a new mineral species: The Cs-dominant analogue of Rhodizite from the Antandrokomby granitic pegmatite, Madagascar. Canadian Mineralogist, 39, 747-755; [MinRec 33:165]
'Londonite-Rhodizite Series'
Localities: Reported from at least 8 localities in this region.
Habit: Forms: Dodecahedral {110} faces modified by deltoid dodecahedral {221}, tristetrahedral {211}, and tetrahedral {111} faces, rarely cubic {100} faces.
Colour: Pale yellowish greenish
Description: Specimens of rhodizite/londonite, when not individually determined chemically from this locality should be designed londonite-rhodizite series. Crystal up to 10 cm across found frozen in pegmatite matrix, in the more chemical evolved portions of the dikes charcateized by green and red tourmaline
Reference: Laurs, B. M.; Pezzotta, F.; Simmons, W.; Falster, A. U & Muhlmeister, S. (2002): Rhodizite-londonite from the Antsongombato pegmatite, Central Madagascar. Gems & Mineralogy. 38 (4), 326-339
Magnesiotaaffeite-2N’2S
Formula: Mg3Al8BeO16
Habit: colourless grains
Reference: Ranorosoa, N. (1986): Etude mineralogique des pegmatites du champ de la Sahatany, Madagascar. These de Doctorat de l`Universite Paul Sabatier, Toulouse Toulouse 3, no. 86 TOU3 0210, Toulouse, 240 p.
Magnetite
Formula: Fe2+Fe3+2O4
Localities: Reported from at least 16 localities in this region.
Reference: Wilson, W.E. (1989) The Anjanabonoina pegmatite, Madagascar. Mineralogical Record 20: 191-200
Malachite
Formula: Cu2(CO3)(OH)2
Reference: Behier, J. (1963): Carte mineralogique de Madagascar. Archive Service Géologique Madagascar. A 1871
Manandonite
Formula: Li2Al4(Si2AlB)O10(OH)8
Reference: Ranorosoa, N. (1986): Etude mineralogique des pegmatites du champ de la Sahatany, Madagascar. These de doctorat de L'Universite Paul Sabatier, Toulouse
Marcasite
Formula: FeS2
Reference: Behier, J. (1960): Contribution á la Minéralogie de Madagascar. Annales Géologiques de Madagascar XXIX, Tananarive. p 69-70
Meionite
Formula: Ca4Al6Si6O24CO3
Reference: Giuliani, G.; Groat, L.A.; Fallick, A.E.; Pignatelli, I.; Pardieu, V. (2020) Ruby Deposits: A Review and Geological Classification. Minerals 10, 597.
'Mica Group'
Reference: Knut Edvard Larsen collection (#M-575)
Microcline
Formula: K(AlSi3O8)
Localities: Reported from at least 29 localities in this region.
Reference: Wilson, W.E. (1989) The Anjanabonoina pegmatite, Madagascar. Mineralogical Record 20: 191-200
Microcline var. Amazonite
Formula: K(AlSi3O8)
Localities: Reported from at least 16 localities in this region.
Reference: Lapis 29 (5): 38
'Microlite Group'
Formula: A2-mTa2X6-wZ-n
Localities: Reported from at least 13 localities in this region.
Reference: Ranorosoa, N. (1986): Etude mineralogique des pegmatites du champ de la Sahatany, Madagascar. These de Doctorat de l`Universite Paul Sabatier, Toulouse Toulouse 3, no. 86 TOU3 0210, Toulouse, 240 p.
Mirabilite
Formula: Na2SO4 · 10H2O
Reference: Behier, J. (1963): Carte mineralogique de Madagascar. Archive Service Géologique Madagascar. A 1871
Molybdenite
Formula: MoS2
Reference: Behier, J. (1963): Carte mineralogique de Madagascar. Archive Service Gélogique Madagascar. A 1871
'Monazite'
Localities: Reported from at least 12 localities in this region.
Reference: Demartin, F. et al (2001): Schiavinatoite,(Nb,Ta)BO4, the Nb analogue of behierite. European Journal of Mineralogy 13, 159-165
Monazite-(Ce)
Formula: Ce(PO4)
Localities: Reported from at least 9 localities in this region.
Reference: Ranorosoa, N. (1986): Etude mineralogique des pegmatites du champ de la Sahatany, Madagascar. These de Doctorat de l`Universite Paul Sabatier, Toulouse.
Montmorillonite
Formula: (Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O
Reference: Behier, J. (1963): Carte mineralogique de Madagascar. Archive Service Gélogique Madagascar. A 1871.
Muscovite
Formula: KAl2(AlSi3O10)(OH)2
Localities: Reported from at least 28 localities in this region.
Reference: Lacroix, A. (1922): Minéralogie de Madagascar. Tome 2. Minéralogie appliquée, lithologie. Augustin Challamel (Éditeur), Paris. p. 278-279.
Muscovite var. Damourite
Formula: KAl2(AlSi3O10)(OH)2
Habit: massive
Colour: light greenish
Reference: Behier, J. (1960): Contribution á la mineralogie de Madagascar. Annales Géologiques de Madagascar XXIX, Tananarive. p 32
Muscovite var. Fuchsite
Formula: K(Al,Cr)3Si3O10(OH)2
Reference: Arliguie M collection (old sample)
Muscovite var. Gilbertite
Formula: KAl2(AlSi3O10)(OH)2
Reference: Behier, J. (1963): Carte mineralogique de Madagascar. Archive Service Gélogique Madagascar. A 1871
Opal
Formula: SiO2 · nH2O
Localities: Reported from at least 6 localities in this region.
Reference: Ranorosoa, N. (1986): Etude mineralogique des pegmatites du champ de la Sahatany, Madagascar. These de doctorat de L'Universite Paul Sabatier, Toulouse
Opal var. Opal-AN
Formula: SiO2 · nH2O
Reference: Knut Edvard Larsen collection # M-190
Orthoclase
Formula: K(AlSi3O8)
Reference: RRUFF ID: R080064. (on a rynersonite specimen)
'Orthopyroxene Subgroup'
Reference: Giuliani, G.; Groat, L.A.; Fallick, A.E.; Pignatelli, I.; Pardieu, V. (2020) Ruby Deposits: A Review and Geological Classification. Minerals 10, 597.
Palygorskite
Formula: (Mg,Al)2Si4O10(OH) · 4H2O
Reference: Lacroix, A. (1912): Sur quelques minéraux des pegmatites du Vakinankaratra (Madagascar). Bulletin de la Société française de Minéralogie, Paris 35 , 76-84
Pargasite
Formula: {Na}{Ca2}{Mg4Al}(Al2Si6O22)(OH)2
Reference: Giuliani, G.; Groat, L.A.; Fallick, A.E.; Pignatelli, I.; Pardieu, V. (2020) Ruby Deposits: A Review and Geological Classification. Minerals 10, 597.
Pezzottaite
Formula: Cs(Be2Li)Al2(Si6O18)
Reference: Rob Lavinsky photo id 744080 ( Dr. Federico Pezzotta is cited in caption on the validity of the id)
Phenakite
Formula: Be2SiO4
Description: Wilson (1984) mentions a find of a pocket with danburite and phenakite. About 50 crystals of clear, colorless, prismatic phenakite from 5mm wide and, 15 cm long to 2,5 cm wide and 8 cm long were mined.
Reference: Wilson, W.E. (1984): What's new in Minerals ? Munich show 1983. Mineralogical Record 15: 118; Wilson, W. E. (1989) The Anjanabonoina pegmatite, Madagascar. Mineralogical Record 20: 191-200
Phlogopite
Formula: KMg3(AlSi3O10)(OH)2
Description: Inclusions in corundum.
Reference: Rakotondrazafy, A.F.M., Giuliani, G., Ohnenstetter, D., Fallick, A.E., Rakotosamizanany, S., Andriamamonjy, A., Ralantoarison, T., Razanatseheno, M., Offant, Y., Garnier, V., Maluski, H., Dunaigre, C., Schwarz, D., and Ratrimo, V. (2008): Ore Geology Reviews 34, 134-154.; Giuliani, G.; Groat, L.A.; Fallick, A.E.; Pignatelli, I.; Pardieu, V. (2020) Ruby Deposits: A Review and Geological Classification. Minerals 10, 597.
Phosphuranylite
Formula: [H3O]+3KCa(UO2)7(PO4)4O4 · 8H2O
Reference: Behier, J. (1963): Carte mineralogique de Madagascar. Archive Service Géologique Madagascar. A 1871
Pollucite
Formula: (Cs,Na)2(Al2Si4O12) · 2H2O
Reference: Pezzotta, F.; Diella, V. & Demartin, F. (2003): Londonit aus Madagaskar- eine neue Mineralart. Lapis 35 (2), 35-38
'Psilomelane'
Formula: Mn, O
Localities: Reported from at least 10 localities in this region.
Reference: Ranorosoa, N. (1986): Etude mineralogique des pegmatites du champ de la Sahatany, Madagascar. These de Doctorat de l`Universite Paul Sabatier, Toulouse.
Pucherite
Formula: Bi(VO4)
Habit: as crust on bismite
Reference: Lacroix, A. (1922): Mineralogie de Madagascar, Tome I. Géologie-Minéralogie descriptive. A.Challamel (Éditeur), Paris. p 156
Pyrite
Formula: FeS2
Description: limonitized pyrite crystals (cubes)has been observed on columbite (Lacroix 1922)
Reference: Lacroix, A. (1922): Mineralogie de Madagascar, Tome I. Géologie-Minéralogie descriptive. A.Challamel (Éditeur), Paris. p 368
'Pyrochlore Group'
Formula: A2Nb2(O,OH)6Z
Localities: Reported from at least 6 localities in this region.
Description: first-generation, homogeneous = > uranoan pyrochlore
Reference: De Vito et al (2006): Nb-Ti-Ta oxides in the gem-mineralized and "hybrid" Anjanabonoina granitic pegmatite, central Madagascar: A record of magmatic and postmagmatic events. Canadian Mineralogist. 44: 87-103.
'Pyrochlore Group var. Samiresite'
Formula: (U,Ca,Ce)2(Nb,Ta)2O6(OH,F)
Reference: Bull. Soc. franc.Mineral. 35 (1912), pp 84-92/ A.Lacroix: (1922) Mineralogie de Madagascar I ,p 283
'Pyrochlore Group var. Uranpyrochlore (of Hogarth 1977)'
Formula: (Ca,U,Ce)2(Nb,Ti,Ta)2O6(OH,F)
Reference: RRUFF specimen R060165
'Pyrochlore Supergroup'
Formula: A2-mD2X6-wZ1-n
Localities: Reported from at least 35 localities in this region.
Reference: http://www.minsocam.org/MSA/Special/Pig/PIG_articles/Madagascar_txt.pdf
'Pyrochlore Supergroup var. Betafite (of Hogarth 1977)' (FRL)
Formula: (Ca,Na,U)2(Ti, Nb,Ta)2O6Z(OH)
Localities: Reported from at least 24 localities in this region.
Habit: masses ; octaedres
Reference: C.R.Acad.Sci. Paris (1912) 154, 1042/ . Lacroix, A. (1922): Mineralogie de Madagascar, Tome I. Géologie-Minéralogie descriptive. A.Challamel (Éditeur), Paris. 624p , p 379
Pyrolusite
Formula: Mn4+O2
Reference: Behier, J. (1963): Carte mineralogique de Madagascar. Archive Service Géologique Madagascar. A 1871
Pyromorphite
Formula: Pb5(PO4)3Cl
Reference: Ranorosoa, N. (1986): Etude mineralogique des pegmatites du champ de la Sahatany, Madagascar. These de Doctorat de l`Universite Paul Sabatier, Toulouse.
Pyrope
Formula: Mg3Al2(SiO4)3
Reference: Giuliani, G.; Groat, L.A.; Fallick, A.E.; Pignatelli, I.; Pardieu, V. (2020) Ruby Deposits: A Review and Geological Classification. Minerals 10, 597.
'Pyroxene Group'
Reference: Lacroix, A. (1922): Mineralogie de Madagascar, Tome I. Géologie-Minéralogie descriptive. A.Challamel (Éditeur), Paris. 624p (p.584)
'Pyroxene Group var. Al-pyroxene'
Reference: Giuliani, G.; Groat, L.A.; Fallick, A.E.; Pignatelli, I.; Pardieu, V. (2020) Ruby Deposits: A Review and Geological Classification. Minerals 10, 597.
Pyrrhotite
Formula: Fe1-xS
Reference: Behier, J. (1963): Carte mineralogique de Madagascar. Archive Service Géologique Madagascar. A 1871
Quartz
Formula: SiO2
Localities: Reported from at least 95 localities in this region.
Reference: Ranorosoa, N. (1986): Etude mineralogique des pegmatites du champ de la Sahatany, Madagascar. These de Doctorat de l`Universite Paul Sabatier, Toulouse.
Quartz var. Amethyst
Formula: SiO2
Localities: Reported from at least 12 localities in this region.
Reference: Lacroix, A. (1922): Mineralogie de Madagascar, Tome I. Géologie-Minéralogie descriptive. A.Challamel (Éditeur), Paris. p. 199 + plate 4
Quartz var. Chalcedony
Formula: SiO2
Description: Lacroix (1912) uses the name Tompobohitra for the locality. This is most probably todays Ankarinarivo (cfr also Rakotoarison 1964)
Reference: Lacroix, A. (1912): Sur quelques minéraux des pegmatites du Vakinankaratra (Madagascar). Bulletin de la Société française de Minéralogie, Paris 35 , 76-84
Quartz var. Citrine
Formula: SiO2
Reference: Behier, J. (1963): Carte mineralogique de Madagascar. Archive Service Géologique Madagascar. A 1871
Quartz var. Pseudocubic Quartz
Formula: SiO2
Reference: Knut Edvard Larsen collection # MM-1931
Quartz var. Rock Crystal
Formula: SiO2
Reference: Rakotoarison, W. (1964): Les pegmatites de la Sahatany. Archive du Service Géologique Madagascar. A.1983, pp.1-39.
Quartz var. Rose Quartz
Formula: SiO2
Localities: Reported from at least 19 localities in this region.
Reference: Lacroix, A. (1922): Mineralogie de Madagascar, Tome I. Géologie-Minéralogie descriptive. A.Challamel (Éditeur), Paris. p 199
Quartz var. Rutilated Quartz
Formula: SiO2
Description: Known locally as "cheveux de Venus" (hair of Venus)
Reference: Wilson, W.E. (1989) The Anjanabonoina pegmatite, Madagascar. Mineralogical Record 20: 191-200
Quartz var. Sceptre Quartz
Formula: SiO2
Reference: John R. Montgomery collection
Quartz var. Smoky Quartz
Formula: SiO2
Localities: Reported from at least 15 localities in this region.
Reference: Wilson, W. E. (1989) The Anjanabonoina pegmatite, Madagascar. Mineralogical Record 20: 191-200
Rhodizite
Formula: (K,Cs)Al4Be4(B,Be)12O28
Habit: Up to 2 cm large well developed dodecahedral crystals modified by tetrahedron {111} faces
Colour: Pale to honey yellow; colorless. Transparent to translucent
Description: Occurs in saccharoidal albite close to the contact with the hosting marble, and in miarolitic cavities.
Reference: Lacroix, A. (1912): Sur quelques minéraux des pegmatites du Vakinankaratra (Madagascar). Bulletin de la Société française de Minéralogie, Paris 35 , 76-84
Rhodochrosite
Formula: MnCO3
Description: Anhedral grains of pink lithiophilite may locally been replaced by rhodochrosite.
Reference: Novák, M., Cempírek, J., Gadas, P., Škoda, R., Galiová, M. V., Pezzotta, F. and Groat, L. A. (2015): Boralsilite and Li, Be-bearing "Boron Mullite" Al8B2Si2O19, Breakdown products of spodumene from the Manjaka pegmatite, Sahatany valley, Madagascar. Canadian Mineralogist. 53: 357-374
Rossmanite
Formula: ☐(LiAl2)Al6(Si6O18)(BO3)3(OH)3(OH)
Reference: Buřival, Z. & Novàk, M. (2015): Hydrothermal replacement of garnet by tourmaline in elbaite subtype LCT pegmatites. In PEG 2015: 7th International Symposium on Granitic Pegmatites. 2015.
Rutile
Formula: TiO2
Localities: Reported from at least 21 localities in this region.
Description: Rutilated crystals as inclusions in quartz ( "cheveux de Venus" (Hair of Venus))
Reference: Wilson, W. E. (1989) The Anjanabonoina pegmatite, Madagascar. Mineralogical Record 20: 191-200
Rutile var. Ilmenorutile
Formula: Fex(Nb,Ta)2x · 4Ti1-xO2
Localities: Reported from at least 8 localities in this region.
Habit: masses of several kilos, crystals are rare (A.Lacroix)
Reference: Lacroix, A. (1922): Mineralogie de Madagascar, Tome I. Géologie-Minéralogie descriptive. A.Challamel (Éditeur), Paris. p 231
Rutile var. Niobium-bearing Rutile
Formula: (Ti,Nb)O2
Description: Found in small bands at the exocontact of the pegmatite with the host rock.
Reference: Novák, M.,Gadas, P.,Galiová Vašínová, M. & Pezzotta, F. (2013): Compositional variations in Cs,Li,Mg-rich beryl from exocontact of the complex Manjaka pegmatite, Sahatany Valley, Madagascar. GAG-MAC Winnipeg 2013, SY2-P3, p. 152-153
Rutile var. Strüverite
Formula: (Ti,Ta,Fe)O2
Localities: Reported from at least 6 localities in this region.
Reference: Lacroix, A. (1922): Mineralogie de Madagascar, Tome I. Géologie-Minéralogie descriptive. A.Challamel (Éditeur), Paris. p 225-226
Rynersonite
Formula: CaTa2O6
Habit: prismatic
Colour: dark gray
Description: As alteration of behierite-schiavinatoite crystals. Identification has been confirmed by single-crystal X-ray diffraction by RRUFF. (RRUFF ID: R080064.2)
Reference: Pezzotta, Federico (2007): Ta-Nb borates and other rare accessory phases in granitic pegmatites of the Itremo region, central Madagascar. Bergverksmuseet Skrift 35,97-98; RRUFF ID: R080064.2
Samarskite-(Y)
Formula: YFe3+Nb2O8
Localities: Reported from at least 9 localities in this region.
Reference: Lacroix, A. (1922): Mineralogie de Madagascar, Tome I. Géologie-Minéralogie descriptive. A.Challamel (Éditeur), Paris. p. 374
Sanidine
Formula: K(AlSi3O8)
Reference: Behier, J. (1963): Carte mineralogique de Madagascar. Archive Service Géologique Madagascar. A 1871
Sapphirine
Formula: Mg4(Mg3Al9)O4[Si3Al9O36]
Reference: Giuliani, G.; Groat, L.A.; Fallick, A.E.; Pignatelli, I.; Pardieu, V. (2020) Ruby Deposits: A Review and Geological Classification. Minerals 10, 597.
'Scapolite'
Reference: Giuliani, G., Fallick, A., Rakotondrazafy, M., Ohnenstetter, D., Andriamamonjy, A., Ralantoarison, T., Rakotosamizanany, S., Razanatseheno, M., Offant, Y., Garnier, V., Dunaigre, C., Schwarz, D., Mercier, A., Ratrimo, V., and Ralison, B. (2007): Mineralium Deposita 42, 251-270.; Giuliani, G.; Groat, L.A.; Fallick, A.E.; Pignatelli, I.; Pardieu, V. (2020) Ruby Deposits: A Review and Geological Classification. Minerals 10, 597.
'Scapolite var. Wernerite'
Reference: Noizet, G. (1963): Constitution géologique de la Région du Mont Ibity a Madagascar. Comptes rendues de la semaine géologique 1963. Annales géologiques de Madagascar.33, 129-132
Schiavinatoite (TL)
Formula: (Nb,Ta)(BO4)
Habit: as cryptocrystalline portions in behierite
Reference: Demartin, F. et al (2001): Schiavinatoite,(Nb,Ta)BO4, the Nb analogue of behierite. European Journal of Mineralogy 13, 159-165
Schorl
Formula: Na(Fe2+3)Al6(Si6O18)(BO3)3(OH)3(OH)
Localities: Reported from at least 31 localities in this region.
Reference: Knut Edvard Larsen collection
Sillimanite
Formula: Al2(SiO4)O
Reference: Rakotondrazafy, A.F.M., Giuliani, G., Ohnenstetter, D., Fallick, A.E., Rakotosamizanany, S., Andriamamonjy, A., Ralantoarison, T., Razanatseheno, M., Offant, Y., Garnier, V., Maluski, H., Dunaigre, C., Schwarz, D., and Ratrimo, V. (2008): Ore Geology Reviews 34, 134-154.
Spessartine
Formula: Mn2+3Al2(SiO4)3
Localities: Reported from at least 24 localities in this region.
Reference: Wilson, W. E. (1989) The Anjanabonoina pegmatite, Madagascar. Mineralogical Record 20: 191-200
Spinel
Formula: MgAl2O4
Localities: Reported from at least 9 localities in this region.
Colour: pale bluish
Description: mm-sized octaedra
Reference: Ranorosoa, N. (1986): Etude mineralogique des pegmatites du champ de la Sahatany, Madagascar. These de Doctorat de l`Universite Paul Sabatier, Toulouse Toulouse 3, no. 86 TOU3 0210, Toulouse, 240 p.
Spinel var. Ferropicotite
Formula: (Mg,Fe)Al2O4
Reference: Lacroix, A. (1922): Mineralogie de Madagascar, Tome I. Géologie-Minéralogie descriptive. A.Challamel (Éditeur), Paris. p 326
Spodumene
Formula: LiAlSi2O6
Localities: Reported from at least 12 localities in this region.
Colour: pink, colorless, pink
Reference: Demartin, F. et al (2001): Schiavinatoite,(Nb,Ta)BO4, the Nb analogue of behierite. European Journal of Mineralogy 13, 159-165
Spodumene var. Kunzite
Formula: LiAlSi2O6
Reference: Arliguie Michel collection & photo (Photo ID: 85907 )
Staurolite
Formula: Fe2+2Al9Si4O23(OH)
Reference: Knut Edvard Larsen pers.com 2009 & collection
Stibiotantalite
Formula: Sb(Ta,Nb)O4
Description: As alteration of behierite-schiavinatoite crystals
Reference: Pezzotta, Federico (2007): Ta-Nb borates and other rare accessory phases in granitic pegmatites of the Itremo region, central Madagascar. Bergverksmuseet Skrift 35,97-98
Sulphur
Formula: S8
Reference: Lacroix, A. (1922): Mineralogie de Madagascar, Tome I. Géologie-Minéralogie descriptive. A.Challamel (Éditeur), Paris. p.155
Talc
Formula: Mg3Si4O10(OH)2
Reference: - Behier, J. (1963): Carte mineralogique de Madagascar. Archive Service Géologique Madagascar. A 1871
Talc var. Steatite
Formula: Mg3(Si4O10)(OH)2
Reference: Behier, J. (1963): Carte mineralogique de Madagascar. Archive Service Géologique Madagascar. A 1871
Tantalite-(Mn)
Formula: Mn2+Ta2O6
Reference: Demartin, F. et al (2001): Schiavinatoite,(Nb,Ta)BO4, the Nb analogue of behierite. European Journal of Mineralogy 13, 159-165
Thermonatrite
Formula: Na2CO3 · H2O
Reference: Behier, J. (1963): Carte mineralogique de Madagascar. Archive Service Géologique Madagascar. A 1871
'Thomsonite'
Reference: Behier, J. (1963): Carte mineralogique de Madagascar. Archive Service Géologique Madagascar. A 1871
Thorite
Formula: Th(SiO4)
Reference: Besairie H. (1966): Les Gites Minéraux de Madagascar. Annales Géologiques de Madagascar, Tananarive. 34, p. 71
Thorite var. Orangite
Formula: Th(SiO4)
Reference: Musée National de la Geologie at Ampandrianomby in Antananarivo, Madagascar. Inventory # 4713; Lacroix, A. (1923): Mineralogie de Madagascar, Tome III. Géologie-Minéralogie descriptive. A. Challamel (Éditeur), Paris. p. 309.
Titanite
Formula: CaTi(SiO4)O
Reference: Besairie H. (1966): Les Gites Minéraux de Madagascar. Annales Géologiques de Madagascar, Tananarive. 34, p. 71
Topaz
Formula: Al2(SiO4)(F,OH)2
Localities: Reported from at least 10 localities in this region.
Reference: Wilson, W. E. (1989) The Anjanabonoina pegmatite, Madagascar. Mineralogical Record 20: 191-200
'Tourmaline'
Formula: A(D3)G6(Si6O18)(BO3)3X3Z
Localities: Reported from at least 71 localities in this region.
Colour: blue, rose
Reference: Lacroix, A. (1912): Sur quelques minéraux des pegmatites du Vakinankaratra (Madagascar). Bulletin de la Société française de Minéralogie, Paris 35 , 76-78
'Tourmaline var. Achroite'
Formula: A(D3)G6(T6O18)(BO3)3X3Z
Reference: Wilson, W.E. (1989) The Anjanabonoina pegmatite, Madagascar. Mineralogical Record 20: 191-200
'Tourmaline var. Rubellite'
Formula: A(D3)G6(T6O18)(BO3)3X3Z
Localities: Reported from at least 20 localities in this region.
Reference: Wilson, W.E. (1989) The Anjanabonoina pegmatite, Madagascar. Mineralogical Record 20: 191-200
'Tourmaline var. Verdelite'
Formula: A(D3)G6(T6O18)(BO3)3X3Z
Reference: Michel Arliguie photo & specimen, photo-id 122484
'Tourmaline var. Watermelon Tourmaline'
Formula: A(D3)G6(T6O18)(BO3)3X3Z
Reference: Martin Gruell photo & specimen, photo id 368722
Tremolite
Formula: ☐{Ca2}{Mg5}(Si8O22)(OH)2
Reference: - Behier, J. (1963): Carte mineralogique de Madagascar. Archive Service Géologique Madagascar. A 1871
Tridymite
Formula: SiO2
Reference: Behier, J. (1963): Carte mineralogique de Madagascar. Archive Service Géologique Madagascar. A 1871
Trolleite
Formula: Al4(PO4)3(OH)3
Reference: Morteani, G. & Ackermand, D. (2006): Mineralogy, geochemistry and petrology of an amphibolite-facies aluminium-phosphate and borosilicate (APB)-bearing quartzite from the Mesoproterozoic Itremo Group (Central Madagascar). Neues Jahrbuch. Mineral. Abh., 182, 123-148
Uranocircite
Formula: Ba(UO2)2(PO4)2 · 10H2O
Reference: Behier, J. (1960): Contribution á la Minéralogie de Madagascar. Annales Géologiques de Madagascar XXIX, Tananarive. p 69-70
Vermiculite
Formula: Mg0.7(Mg,Fe,Al)6(Si,Al)8O20(OH)4 · 8H2O
Localities: Reported from at least 11 localities in this region.
Reference: Behier, J. (1963): Carte mineralogique de Madagascar. Archive Service Géologique Madagascar. A 1871
Vesuvianite
Formula: Ca19Fe3+Al4(Al6Mg2)(☐4)☐[Si2O7]4[(SiO4)10]O(OH)9
Colour: brownish-red
Description: Crystals to 50 mm long (Behier 1960, Arligue M. specimen is larger)
Reference: Behier, J. (1960): Contribution á la Minéralogie de Madagascar. Annales Géologiques de Madagascar XXIX, Tananarive, p 43-44
Vigezzite ?
Formula: (Ca,Ce)(Nb,Ta,Ti)2O6
Description: As alteration of behierite-schiavinatoite crystals
Reference: Pezzotta, Federico (2007): Ta-Nb borates and other rare accessory phases in granitic pegmatites of the Itremo region, central Madagascar. Bergverksmuseet Skrift 35,97-98
Vivianite
Formula: Fe2+3(PO4)2 · 8H2O
Reference: Behier, J. (1963): Carte mineralogique de Madagascar. Archive Service Géologique Madagascar. A 1871
Vránaite (TL)
Formula: Al16B4Si4O38
Type Locality:
Habit: As aggregates of subparallel prisms up to 100 μm long.
Description: Occurs as a breakdown product of spodumene.
Reference: Cempírek, J.,Grew, E.S.,Kampf, A.R., Ma, C., Novák, M., Gadas, P., Škoda, R., Vašinová-Galiová, M., Pezzotta, F., and Groat, L.A., 2016. Vránaite, IMA 2015-084. CNMNC Newsletter No. 29, February 2016, 200; Mineralogical Magazine, 80, 199–205; Cempírek, J., Grew, E.S., Kampf, A.R., Ma, C., Novák, M., Gadas, P., Škoda, R., Vašinová-Galiová, M., Pezzotta, F., Groat, L.A., Krivovichev, S. (2016) Vránaite, ideally Al16B4Si4O38, a new mineral related to boralsilite, Al16B6Si2O37, from the Manjaka pegmatite, Sahatany Valley, Madagascar. American Mineralogist: 101(9): 2108-2117.
Wavellite
Formula: Al3(PO4)2(OH,F)3 · 5H2O
Reference: Morteani, G. & Ackermand, D. (2006): Mineralogy, geochemistry and petrology of an amphibolite-facies aluminium-phosphate and borosilicate (APB)-bearing quartzite from the Mesoproterozoic Itremo Group (Central Madagascar). Neues Jahrbuch. Mineral. Abh., 182, 123-148
Wollastonite
Formula: CaSiO3
Reference: Tomasz Praszkier information, analyzed.
Xenotime-(Y)
Formula: Y(PO4)
Localities: Reported from at least 12 localities in this region.
Reference: Behier, J. (1963): Carte mineralogique de Madagascar. Archive Service Géologique Madagascar. A 1871
'Zinnwaldite'
Reference: Wilson, W. E. (1989) The Anjanabonoina pegmatite, Madagascar. Mineralogical Record 20: 191-200
Zircon
Formula: Zr(SiO4)
Localities: Reported from at least 34 localities in this region.
Reference: Ranorosoa, N. (1986): Etude mineralogique des pegmatites du champ de la Sahatany, Madagascar. These de doctorat de L'Universite Paul Sabatier, Toulouse
Zircon var. Cyrtolite
Formula: Zr[(SiO4),(OH)4]
Description: Cyrtolite mentioned as a associated mineral to "blomstrandite" in Lacroix (1912), but described as malacon later in Lacroix 1922
Reference: Lacroix, A. (1912): Sur un groupe de niobotantalates cubiques, radioactifs, des pegmatites du Vakinankaratra . Bulletin de la Société française de Minéralogie, Paris 35 , 85-92
Zircon var. Hafnian Zircon
Formula: (Zr,Hf)SiO4
Reference: K.E.Larsen collection, analyzed (SEM-EDS) by Skip Simmons 1999
Zircon var. Malacon
Formula: Zr(SiO4)
Localities: Reported from at least 11 localities in this region.
Reference: Lacroix, A. (1922): Mineralogie de Madagascar, Tome I. Géologie-Minéralogie descriptive. A.Challamel (Éditeur), Paris. 624p , p 379
Zoisite
Formula: Ca2Al3[Si2O7][SiO4]O(OH)
Reference: Lefevre & Thomas (1998): Les pegmatites de la vallée de la Sahatany, Madagascar. La Règne Minéral, 19, 15-28

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