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Itorendrika-Ifasina, Imorona valley, Itremo, Ambatofinandrahana, Amoron'i Mania, Madagascari
Regional Level Types
Itorendrika-IfasinaDeposit
Imorona valleyValley
ItremoCommune
AmbatofinandrahanaDistrict
Amoron'i ManiaRegion
MadagascarCountry

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Name in Malagasy:Itorendrika-Ifasina, Lohasahan' Imorona, Kaominin' Itremo, Distrikan' Ambatofinandrahana, Faritra Amoron'i Mania, Madagasikara
Location is approximate, estimate based on other nearby localities.
 
Latitude & Longitude (WGS84): 20° South , 46° East (est.)
Margin of Error:~34km
Locality type:Deposit
Köppen climate type:Cwb : Subtropical highland climate or temperate oceanic climate with dry winters


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


Regions containing this locality

Somali Plate (Somalia Plate)Tectonic Plate
Fianarantsoa Province, MadagascarProvince

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
Aegirine9.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, Mixtures, 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 Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
H Magnesio-riebeckite◻{Na2}{Mg3Fe23+}(Si8O22)(OH)2
H Glaucophane◻[Na2][Mg3Al2]Si8O22(OH)2
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
CCarbon
C Parisite-(Ce)CaCe2(CO3)3F2
OOxygen
O QuartzSiO2
O RutileTiO2
O Quartz (var: Chalcedony)SiO2
O HematiteFe2O3
O BaryteBaSO4
O Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
O Magnesio-riebeckite◻{Na2}{Mg3Fe23+}(Si8O22)(OH)2
O AegirineNaFe3+Si2O6
O Quartz (var: Amethyst)SiO2
O Orthochevkinite(Ce,La,Ca,Na,Th)4(Fe2+,Mg)2(Ti,Fe3+)3Si4O22
O Parisite-(Ce)CaCe2(CO3)3F2
O Glaucophane◻[Na2][Mg3Al2]Si8O22(OH)2
O MagnetiteFe2+Fe23+O4
O Amphibole SupergroupAX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
O CrichtoniteSr(Mn,Y,U)Fe2(Ti,Fe,Cr,V)18(O,OH)38
FFluorine
F Parisite-(Ce)CaCe2(CO3)3F2
F Amphibole SupergroupAX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
NaSodium
Na Magnesio-riebeckite◻{Na2}{Mg3Fe23+}(Si8O22)(OH)2
Na AegirineNaFe3+Si2O6
Na Orthochevkinite(Ce,La,Ca,Na,Th)4(Fe2+,Mg)2(Ti,Fe3+)3Si4O22
Na Glaucophane◻[Na2][Mg3Al2]Si8O22(OH)2
MgMagnesium
Mg Magnesio-riebeckite◻{Na2}{Mg3Fe23+}(Si8O22)(OH)2
Mg Orthochevkinite(Ce,La,Ca,Na,Th)4(Fe2+,Mg)2(Ti,Fe3+)3Si4O22
Mg Glaucophane◻[Na2][Mg3Al2]Si8O22(OH)2
AlAluminium
Al Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Al Glaucophane◻[Na2][Mg3Al2]Si8O22(OH)2
Al Amphibole SupergroupAX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
SiSilicon
Si QuartzSiO2
Si Quartz (var: Chalcedony)SiO2
Si Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Si Magnesio-riebeckite◻{Na2}{Mg3Fe23+}(Si8O22)(OH)2
Si AegirineNaFe3+Si2O6
Si Quartz (var: Amethyst)SiO2
Si Orthochevkinite(Ce,La,Ca,Na,Th)4(Fe2+,Mg)2(Ti,Fe3+)3Si4O22
Si Glaucophane◻[Na2][Mg3Al2]Si8O22(OH)2
Si Amphibole SupergroupAX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
SSulfur
S PyriteFeS2
S BaryteBaSO4
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 RutileTiO2
Ti Orthochevkinite(Ce,La,Ca,Na,Th)4(Fe2+,Mg)2(Ti,Fe3+)3Si4O22
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
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 PyriteFeS2
Fe HematiteFe2O3
Fe Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Fe Magnesio-riebeckite◻{Na2}{Mg3Fe23+}(Si8O22)(OH)2
Fe AegirineNaFe3+Si2O6
Fe Orthochevkinite(Ce,La,Ca,Na,Th)4(Fe2+,Mg)2(Ti,Fe3+)3Si4O22
Fe MagnetiteFe2+Fe23+O4
Fe CrichtoniteSr(Mn,Y,U)Fe2(Ti,Fe,Cr,V)18(O,OH)38
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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