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Itorendrika-Ifasina, Imorona valley, Ambatofinandrahana Commune, Ambatofinandrahana District, Amoron'i Mania Region, Fianarantsoa Province, Madagascar

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Location is approximate, estimate based on other nearby localities.
 
Latitude & Longitude (WGS84): 20° South , 46° East (est.)
Margin of Error:~33km
Köppen climate type:Cwb : Subtropical highland climate or temperate oceanic climate with dry winters
Name(s) in local language(s):Itorendrika-Ifasina, Lohasahan' Imorona, Kaominin' Ambatofinandrahana, Distrikan' Ambatofinandrahana, Faritra Amoron'i Mania, Faritanin'i Fianarantsoa, Madagasikara


Eluvial deposit with minerals from a contact zone with pegmatitic facies of an alkali-granite. Located along the Imorona River between Ifasina and Itorendrika.


Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


12 valid minerals.

Detailed Mineral List:

Aegirine
Formula: NaFe3+Si2O6
Reference: Lacroix, A. (1915): La bastnaesite et la tscheffkinite de Madagascar; le mode de gisement des fluocarbonates, pseudomorphose d'origine pneumatolytique dans les granites alcalins. Bulletin de la Société Française de Minéralogie et de Cristallographie. 38, 106 - 125.
'Amphibole Supergroup'
Formula: AX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Reference: Lacroix, A. (1915): La bastnaesite et la tscheffkinite de Madagascar; le mode de gisement des fluocarbonates, pseudomorphose d'origine pneumatolytique dans les granites alcalins. Bulletin de la Société Française de Minéralogie et de Cristallographie. 38, 106 - 125.
Baryte
Formula: BaSO4
Reference: Ungemach, M.H. (1916) Contribution á la Minéralogie de Madagascar. Bulletin de la Société française de minéralogie. 39: 5-38: Behier, J. (1963): Carte mineralogique de Madagascar. Archive Service Géologique Madagascar. A 1871
'Bastnäsite'
Description: Occurs in a contact zone with pegmatitic facies of an alkali-granite.
Reference: Lacroix, A. (1915): La bastnaesite et la tscheffkinite de Madagascar; le mode de gisement des fluocarbonates, pseudomorphose d'origine pneumatolytique dans les granites alcalins. Bulletin de la Société Française de Minéralogie et de Cristallographie. 38, 106 - 125.; A. Lacroix (1922): Mineralogie de Madagascar, T.1, p.298.
'Biotite'
Reference: Lacroix, A. (1915): La bastnaesite et la tscheffkinite de Madagascar; le mode de gisement des fluocarbonates, pseudomorphose d'origine pneumatolytique dans les granites alcalins. Bulletin de la Société Française de Minéralogie et de Cristallographie. 38, 106 - 125.
'Chevkinite Group'
Reference: Lacroix, A. (1915): La bastnaesite et la tscheffkinite de Madagascar; le mode de gisement des fluocarbonates, pseudomorphose d'origine pneumatolytique dans les granites alcalins. Bulletin de la Société Française de Minéralogie et de Cristallographie. 38, 106 - 125. ; Ungemach, M.H. (1916) Contribution à la Minéralogie de Madagascar. Bulletin de la Société française de minéralogie 39: 5-38
Crichtonite
Formula: Sr(Mn,Y,U)Fe2(Ti,Fe,Cr,V)18(O,OH)38
Reference: Lacroix, A. (1922): Mineralogie de Madagascar, Tome I. Géologie-Minéralogie descriptive. A.Challamel (Éditeur), Paris. 624p (p.587)
Epidote
Formula: {Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Reference: Behier, J. (1963): Carte mineralogique de Madagascar. Archive Service Géologique Madagascar. A 1871
Glaucophane
Formula: ◻[Na2][Mg3Al2]Si8O22(OH)2
Reference: 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: 290.
Hematite
Formula: Fe2O3
Reference: Lacroix, A. (1915): La bastnaesite et la tscheffkinite de Madagascar; le mode de gisement des fluocarbonates, pseudomorphose d'origine pneumatolytique dans les granites alcalins. Bulletin de la Société Française de Minéralogie et de Cristallographie. 38, 106 - 125; Ungemach, M.H. (1916) Contribution á la Minéralogie de Madagascar. Bulletin de la Société française de minéralogie. 39: 5-38
Magnesio-riebeckite
Formula: ◻{Na2}{Mg3Fe3+2}(Si8O22)(OH)2
Description: described as Torendrikite
Reference: Behier, J. (1963): Carte mineralogique de Madagascar. Archive Service Géologique Madagascar. A 1871; Rasoamalala, V., Salvi, S., Béziat, D., Ursule, J.-Ph., Cuney, M., Parseval, Ph. de, Guillaume, D., Moine, B. & Andriamampihantona, J. (2014): Geology of bastnaesite and monazite deposits in the Ambatofinandrahana area, central part of Madagascar: An overview. Journal of African Earth Sciences. 94, 128-140
Magnetite
Formula: Fe2+Fe3+2O4
Reference: Lacroix, A. (1915): La bastnaesite et la tscheffkinite de Madagascar; le mode de gisement des fluocarbonates, pseudomorphose d'origine pneumatolytique dans les granites alcalins. Bulletin de la Société Française de Minéralogie et de Cristallographie. 38, 106 - 125.; Lacroix, A. (1922): Mineralogie de Madagascar, Tome I. Géologie-Minéralogie descriptive. A.Challamel (Éditeur), Paris. 624p (p.587)
'Orthochevkinite'
Formula: (Ce,La,Ca,Na,Th)4(Fe2+,Mg)2(Ti,Fe3+)3Si4O22
Reference: Lacroix, A. (1922): Mineralogie de Madagascar, Tome I. Géologie-Minéralogie descriptive. A.Challamel (Éditeur), Paris, p 586-7
'Parisite'
Reference: Ungemach, M.H. (1916) Contribution á la Minéralogie de Madagascar. Bulletin de la Société française de minéralogie. 39: 5-38; Behier, J. (1963): Carte mineralogique de Madagascar. Archive Service Géologique Madagascar. A 1871
Parisite-(Ce)
Formula: CaCe2(CO3)3F2
Reference: 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: 284.
'Psilomelane'
Reference: Behier, J. (1963): Carte mineralogique de Madagascar. Archive Service Géologique Madagascar. A 1871
Pyrite
Formula: FeS2
Reference: Behier, J. (1963): Carte mineralogique de Madagascar. Archive Service Géologique Madagascar. A 1871
Quartz
Formula: SiO2
Reference: Behier, J. (1963): Carte mineralogique de Madagascar. Archive Service Géologique Madagascar. A 1871
Quartz var: Amethyst
Formula: SiO2
Reference: Behier, J. (1963): Carte mineralogique de Madagascar. Archive Service Géologique Madagascar. A 1871
Quartz var: Chalcedony
Formula: SiO2
Reference: Behier, J. (1963): Carte mineralogique de Madagascar. Archive Service Géologique Madagascar. A 1871
Rutile
Formula: TiO2
Description: In alterationproducts after chevkinite or bastnäsite
Reference: Lacroix, A. (1915): La bastnaesite et la tscheffkinite de Madagascar; le mode de gisement des fluocarbonates, pseudomorphose d'origine pneumatolytique dans les granites alcalins. Bulletin de la Société Française de Minéralogie et de Cristallographie. 38, 106 - 125.

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
Pyrite2.EB.05aFeS2
Group 4 - Oxides and Hydroxides
Crichtonite4.CC.40Sr(Mn,Y,U)Fe2(Ti,Fe,Cr,V)18(O,OH)38
Hematite4.CB.05Fe2O3
Magnetite4.BB.05Fe2+Fe3+2O4
Quartz4.DA.05SiO2
var: Amethyst4.DA.05SiO2
var: Chalcedony4.DA.05SiO2
Rutile4.DB.05TiO2
Group 5 - Nitrates and Carbonates
Parisite-(Ce)5.BD.20bCaCe2(CO3)3F2
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
Baryte7.AD.35BaSO4
Group 9 - Silicates
'Aegirine'9.DA.25NaFe3+Si2O6
Epidote9.BG.05a{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Glaucophane9.DE.25◻[Na2][Mg3Al2]Si8O22(OH)2
Magnesio-riebeckite9.DE.25◻{Na2}{Mg3Fe3+2}(Si8O22)(OH)2
Unclassified Minerals, Rocks, etc.
Amphibole Supergroup-AX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Bastnäsite-
Biotite-
Chevkinite Group-
Orthochevkinite-(Ce,La,Ca,Na,Th)4(Fe2+,Mg)2(Ti,Fe3+)3Si4O22
Parisite-
Psilomelane-

List of minerals arranged by Dana 8th Edition classification

Group 2 - SULFIDES
AmBnXp, with (m+n):p = 1:2
Pyrite2.12.1.1FeS2
Group 4 - SIMPLE OXIDES
A2X3
Hematite4.3.1.2Fe2O3
AX2
Rutile4.4.1.1TiO2
Group 7 - MULTIPLE OXIDES
AB2X4
Magnetite7.2.2.3Fe2+Fe3+2O4
Group 8 - MULTIPLE OXIDES CONTAINING NIOBIUM,TANTALUM OR TITANIUM
AB21O38
Crichtonite8.5.1.3Sr(Mn,Y,U)Fe2(Ti,Fe,Cr,V)18(O,OH)38
Group 16a - ANHYDROUS CARBONATES CONTAINING HYDROXYL OR HALOGEN
Parisite-(Ce)16a.1.5.1CaCe2(CO3)3F2
Group 28 - ANHYDROUS ACID AND NORMAL SULFATES
AXO4
Baryte28.3.1.1BaSO4
Group 56 - SOROSILICATES Si2O7 Groups, With Additional O, OH, F and H2O
Si2O7 Groups and O, OH, F, and H2O with cations in [4] and/or >[4] coordination
'Orthochevkinite'56.2.8.4(Ce,La,Ca,Na,Th)4(Fe2+,Mg)2(Ti,Fe3+)3Si4O22
Group 58 - SOROSILICATES Insular, Mixed, Single, and Larger Tetrahedral Groups
Insular, Mixed, Single, and Larger Tetrahedral Groups with cations in [6] and higher coordination; single and double groups (n = 1, 2)
Epidote58.2.1a.7{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Group 65 - INOSILICATES Single-Width,Unbranched Chains,(W=1)
Single-Width Unbranched Chains, W=1 with chains P=2
Aegirine65.1.3c.2NaFe3+Si2O6
Group 66 - INOSILICATES Double-Width,Unbranched Chains,(W=2)
Amphiboles - Mg-Fe-Mn-Li subgroup
Glaucophane66.1.3c.1◻[Na2][Mg3Al2]Si8O22(OH)2
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Quartz75.1.3.1SiO2
Unclassified Minerals, Rocks, etc.
'Amphibole Supergroup'-AX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
'Bastnäsite'-
'Biotite'-
'Chevkinite Group'-
Magnesio-riebeckite-◻{Na2}{Mg3Fe3+2}(Si8O22)(OH)2
'Parisite'-
'Psilomelane'-
Quartz
var: Amethyst
-SiO2
var: Chalcedony-SiO2

List of minerals for each chemical element

HHydrogen
H Amphibole SupergroupAX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
H CrichtoniteSr(Mn,Y,U)Fe2(Ti,Fe,Cr,V)18(O,OH)38
H Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
H Glaucophane◻[Na2][Mg3Al2]Si8O22(OH)2
H Magnesio-riebeckite◻{Na2}{Mg3Fe23+}(Si8O22)(OH)2
CCarbon
C Parisite-(Ce)CaCe2(CO3)3F2
OOxygen
O AegirineNaFe3+Si2O6
O Quartz (var: Amethyst)SiO2
O Amphibole SupergroupAX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
O BaryteBaSO4
O Quartz (var: Chalcedony)SiO2
O CrichtoniteSr(Mn,Y,U)Fe2(Ti,Fe,Cr,V)18(O,OH)38
O Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
O Glaucophane◻[Na2][Mg3Al2]Si8O22(OH)2
O HematiteFe2O3
O Magnesio-riebeckite◻{Na2}{Mg3Fe23+}(Si8O22)(OH)2
O MagnetiteFe2+Fe23+O4
O Orthochevkinite(Ce,La,Ca,Na,Th)4(Fe2+,Mg)2(Ti,Fe3+)3Si4O22
O Parisite-(Ce)CaCe2(CO3)3F2
O QuartzSiO2
O RutileTiO2
FFluorine
F Amphibole SupergroupAX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
F Parisite-(Ce)CaCe2(CO3)3F2
NaSodium
Na AegirineNaFe3+Si2O6
Na Glaucophane◻[Na2][Mg3Al2]Si8O22(OH)2
Na Magnesio-riebeckite◻{Na2}{Mg3Fe23+}(Si8O22)(OH)2
Na Orthochevkinite(Ce,La,Ca,Na,Th)4(Fe2+,Mg)2(Ti,Fe3+)3Si4O22
MgMagnesium
Mg Glaucophane◻[Na2][Mg3Al2]Si8O22(OH)2
Mg Magnesio-riebeckite◻{Na2}{Mg3Fe23+}(Si8O22)(OH)2
Mg Orthochevkinite(Ce,La,Ca,Na,Th)4(Fe2+,Mg)2(Ti,Fe3+)3Si4O22
AlAluminium
Al Amphibole SupergroupAX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Al Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Al Glaucophane◻[Na2][Mg3Al2]Si8O22(OH)2
SiSilicon
Si AegirineNaFe3+Si2O6
Si Quartz (var: Amethyst)SiO2
Si Amphibole SupergroupAX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Si Quartz (var: Chalcedony)SiO2
Si Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Si Glaucophane◻[Na2][Mg3Al2]Si8O22(OH)2
Si Magnesio-riebeckite◻{Na2}{Mg3Fe23+}(Si8O22)(OH)2
Si Orthochevkinite(Ce,La,Ca,Na,Th)4(Fe2+,Mg)2(Ti,Fe3+)3Si4O22
Si QuartzSiO2
SSulfur
S BaryteBaSO4
S PyriteFeS2
ClChlorine
Cl Amphibole SupergroupAX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
CaCalcium
Ca Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Ca Orthochevkinite(Ce,La,Ca,Na,Th)4(Fe2+,Mg)2(Ti,Fe3+)3Si4O22
Ca Parisite-(Ce)CaCe2(CO3)3F2
TiTitanium
Ti Amphibole SupergroupAX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Ti CrichtoniteSr(Mn,Y,U)Fe2(Ti,Fe,Cr,V)18(O,OH)38
Ti Orthochevkinite(Ce,La,Ca,Na,Th)4(Fe2+,Mg)2(Ti,Fe3+)3Si4O22
Ti RutileTiO2
VVanadium
V CrichtoniteSr(Mn,Y,U)Fe2(Ti,Fe,Cr,V)18(O,OH)38
CrChromium
Cr CrichtoniteSr(Mn,Y,U)Fe2(Ti,Fe,Cr,V)18(O,OH)38
MnManganese
Mn CrichtoniteSr(Mn,Y,U)Fe2(Ti,Fe,Cr,V)18(O,OH)38
FeIron
Fe AegirineNaFe3+Si2O6
Fe CrichtoniteSr(Mn,Y,U)Fe2(Ti,Fe,Cr,V)18(O,OH)38
Fe Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Fe HematiteFe2O3
Fe Magnesio-riebeckite◻{Na2}{Mg3Fe23+}(Si8O22)(OH)2
Fe MagnetiteFe2+Fe23+O4
Fe Orthochevkinite(Ce,La,Ca,Na,Th)4(Fe2+,Mg)2(Ti,Fe3+)3Si4O22
Fe PyriteFeS2
SrStrontium
Sr CrichtoniteSr(Mn,Y,U)Fe2(Ti,Fe,Cr,V)18(O,OH)38
YYttrium
Y CrichtoniteSr(Mn,Y,U)Fe2(Ti,Fe,Cr,V)18(O,OH)38
BaBarium
Ba BaryteBaSO4
LaLanthanum
La Orthochevkinite(Ce,La,Ca,Na,Th)4(Fe2+,Mg)2(Ti,Fe3+)3Si4O22
CeCerium
Ce Orthochevkinite(Ce,La,Ca,Na,Th)4(Fe2+,Mg)2(Ti,Fe3+)3Si4O22
Ce Parisite-(Ce)CaCe2(CO3)3F2
ThThorium
Th Orthochevkinite(Ce,La,Ca,Na,Th)4(Fe2+,Mg)2(Ti,Fe3+)3Si4O22
UUranium
U CrichtoniteSr(Mn,Y,U)Fe2(Ti,Fe,Cr,V)18(O,OH)38

References

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Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Lacroix, A. (1915): La bastnaesite et la tscheffkinite de Madagascar; le mode de gisement des fluocarbonates, pseudomorphose d'origine pneumatolytique dans les granites alcalins. Bulletin de la Société Française de Minéralogie et de Cristallographie. 38, 106 - 125.
Ungemach, M.H. (1916) Contribution á la Minéralogie de Madagascar. Bulletin de la Société française de minéralogie. 39: 5-38 (on a find of hematite, baryte, chevkinite and parisite)
Lacroix, A. (1922): Mineralogie de Madagascar, Tome I. Géologie-Minéralogie descriptive. A.Challamel (Éditeur), Paris. 624p
Behier, J. (1960): Contribution á la mineralogie de Madagascar. Annales Géologiques de Madagascar XXIX, Tananarive
Behier, J. (1963): Carte mineralogique de Madagascar. Archive Service Géologique Madagascar. A 1871


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