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Itremo massif, Ambatofinandrahana District, Amoron'i Mania, Madagascari
Regional Level Types
Itremo massifMassif
Ambatofinandrahana DistrictDistrict
Amoron'i ManiaRegion
MadagascarCountry

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Latitude & Longitude (WGS84):
20° South , 46° East (est.)
Estimate based on other nearby localities or region boundaries.
Margin of Error:
~9km
Type:
Mindat Locality ID:
108196
Long-form identifier:
mindat:1:2:108196:4
GUID (UUID V4):
0bb35598-d7a5-4ebd-9b74-9cf03b12b26f
Other Languages:
Malagasy:
Tangorombohitr'Itremo, Distrikan' Ambatofinandrahana, Faritra Amoron'i Mania, Madagasikara


NOTE:
The large Itremo massif is divided administratively into 3 different communes (kaominina): Itremo Commune, Mangatabohangy Commune and Amborompotsy Commune. Below, the localitites located in Itremo and Mangatabohangy Communes are listed.
A large part of the massif, an area of 273 kmΒ² has recently (2003) become an protected area due to its many diverse and rare plants.

" In Ambatofinandrahana there is a number of quartz localities (thousands of quartz veins) but majority of specimens in this area are mined vicinity of Itremo village. This big village is situated just before entering to scattered Itremo Massif - metamorphosed sedimentary rocks, which today are quartzites and marbles. In this massif there are thousands of quartz veins (hydrothermal low temperature) with very varied quartz crystals. In some veins there is simple rock crystal (crystals up to 70 cm), in others there are so-called pineapple quartz. Some veins contain quartz with bubbles, hollandite or inclusions of a greenish micaeous mineral.
People from Itremo make irregular mining in their neighbourhood (around 15 km). Other areas of Itremo Massif are almost completely unexplored.
Majority of quartz from Madagascar (even if not labelled like this) is from Itremo massif". Tomasz Praszkier commentary see http://www.mindat.org/mesg-95-131671.html


Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List

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

18 valid minerals. 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:

β“˜ Amblygonite
Formula: LiAl(PO4)F
β“˜ 'Apatite'
Formula: Ca5(PO4)3(Cl/F/OH)
Habit: small grains
Colour: yellow
β“˜ Augelite
Formula: Al2(PO4)(OH)3
β“˜ Berlinite
Formula: AlPO4
β“˜ Beryl
Formula: Be3Al2(Si6O18)
β“˜ Celadonite
Formula: K(MgFe3+◻)(Si4O10)(OH)2
Description: The green inclusions in the quartz crystals are showed to be fuchsite, see reference unnder that entry.
β“˜ Celestine
Formula: SrSO4
β“˜ 'Chlorite Group'
β“˜ Dumortierite
Formula: Al(Al2O)(Al2O)2(SiO4)3(BO3)
Habit: fibrous masses emballed in quartz
Colour: lavender blue to blackblue
β“˜ 'Feldspar Group'
β“˜ Goyazite
Formula: SrAl3(PO4)(PO3OH)(OH)6
Habit: as a rim of grains around lazulite
β“˜ Hematite
Formula: Fe2O3
References:
β“˜ Kornerupine
Formula: Mg3Al6(Si,Al,B)5O21(OH)
β“˜ Kyanite
Formula: Al2(SiO4)O
β“˜ Lazulite
Formula: MgAl2(PO4)2(OH)2
Habit: as inclusions in massive quartz
Colour: blue
β“˜ Muscovite
Formula: KAl2(AlSi3O10)(OH)2
β“˜ Muscovite var. Fuchsite
Formula: K(Al,Cr)3Si3O10(OH)2
β“˜ 'Pumpellyite Subgroup'
Formula: Ca2XAl2[Si2O6(OH)][SiO4](OH)2A
β“˜ Quartz
Formula: SiO2
β“˜ Quartz var. Milky Quartz
Formula: SiO2
β“˜ Rutile
Formula: TiO2
β“˜ Sillimanite
Formula: Al2(SiO4)O
β“˜ Spessartine
Formula: Mn2+3Al2(SiO4)3
β“˜ Svanbergite
Formula: SrAl3(PO4)(SO4)(OH)6
β“˜ 'Tourmaline'
Formula: AD3G6 (T6O18)(BO3)3X3Z
Colour: black
Description: "tourmaline noire"
β“˜ Trolleite
Formula: Al4(PO4)3(OH)3
Habit: small grains
Description: Found in the grain boundary between goyazite and lazulite

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
β“˜Hematite4.CB.05Fe2O3
β“˜Quartz4.DA.05SiO2
β“˜var. Milky Quartz4.DA.05SiO2
β“˜Rutile4.DB.05TiO2
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
β“˜Celestine7.AD.35SrSO4
Group 8 - Phosphates, Arsenates and Vanadates
β“˜Amblygonite8.BB.05LiAl(PO4)F
β“˜Augelite8.BE.05Al2(PO4)(OH)3
β“˜Berlinite8.AA.05AlPO4
β“˜Goyazite8.BL.10SrAl3(PO4)(PO3OH)(OH)6
β“˜Lazulite8.BB.40MgAl2(PO4)2(OH)2
β“˜Svanbergite8.BL.05SrAl3(PO4)(SO4)(OH)6
β“˜Trolleite8.BB.45Al4(PO4)3(OH)3
Group 9 - Silicates
β“˜Beryl9.CJ.05Be3Al2(Si6O18)
β“˜Celadonite ?9.EC.15K(MgFe3+β—»)(Si4O10)(OH)2
β“˜Dumortierite9.AJ.10Al(Al2O)(Al2O)2(SiO4)3(BO3)
β“˜Kornerupine9.BJ.50Mg3Al6(Si,Al,B)5O21(OH)
β“˜Kyanite9.AF.15Al2(SiO4)O
β“˜Muscovite9.EC.15KAl2(AlSi3O10)(OH)2
β“˜var. Fuchsite9.EC.15K(Al,Cr)3Si3O10(OH)2
β“˜Sillimanite9.AF.05Al2(SiO4)O
β“˜Spessartine9.AD.25Mn2+3Al2(SiO4)3
Unclassified Minerals, Rocks, etc.
β“˜'Apatite'-Ca5(PO4)3(Cl/F/OH)
β“˜'Chlorite Group' ?-
β“˜'Feldspar Group'-
β“˜'Pumpellyite Subgroup'-Ca2XAl2[Si2O6(OH)][SiO4](OH)2A
β“˜'Tourmaline'-AD3G6 (T6O18)(BO3)3X3Z

List of minerals for each chemical element

HHydrogen
Hβ“˜ ApatiteCa5(PO4)3(Cl/F/OH)
Hβ“˜ LazuliteMgAl2(PO4)2(OH)2
Hβ“˜ KornerupineMg3Al6(Si,Al,B)5O21(OH)
Hβ“˜ Muscovite var. FuchsiteK(Al,Cr)3Si3O10(OH)2
Hβ“˜ Pumpellyite SubgroupCa2XAl2[Si2O6(OH)][SiO4](OH)2A
Hβ“˜ MuscoviteKAl2(AlSi3O10)(OH)2
Hβ“˜ GoyaziteSrAl3(PO4)(PO3OH)(OH)6
Hβ“˜ SvanbergiteSrAl3(PO4)(SO4)(OH)6
Hβ“˜ AugeliteAl2(PO4)(OH)3
Hβ“˜ TrolleiteAl4(PO4)3(OH)3
Hβ“˜ CeladoniteK(MgFe3+◻)(Si4O10)(OH)2
LiLithium
Liβ“˜ AmblygoniteLiAl(PO4)F
BeBeryllium
Beβ“˜ BerylBe3Al2(Si6O18)
BBoron
Bβ“˜ DumortieriteAl(Al2O)(Al2O)2(SiO4)3(BO3)
Bβ“˜ TourmalineAD3G6 (T6O18)(BO3)3X3Z
Bβ“˜ KornerupineMg3Al6(Si,Al,B)5O21(OH)
OOxygen
Oβ“˜ BerylBe3Al2(Si6O18)
Oβ“˜ DumortieriteAl(Al2O)(Al2O)2(SiO4)3(BO3)
Oβ“˜ TourmalineAD3G6 (T6O18)(BO3)3X3Z
Oβ“˜ ApatiteCa5(PO4)3(Cl/F/OH)
Oβ“˜ LazuliteMgAl2(PO4)2(OH)2
Oβ“˜ KyaniteAl2(SiO4)O
Oβ“˜ SillimaniteAl2(SiO4)O
Oβ“˜ QuartzSiO2
Oβ“˜ SpessartineMn32+Al2(SiO4)3
Oβ“˜ KornerupineMg3Al6(Si,Al,B)5O21(OH)
Oβ“˜ Muscovite var. FuchsiteK(Al,Cr)3Si3O10(OH)2
Oβ“˜ Pumpellyite SubgroupCa2XAl2[Si2O6(OH)][SiO4](OH)2A
Oβ“˜ MuscoviteKAl2(AlSi3O10)(OH)2
Oβ“˜ GoyaziteSrAl3(PO4)(PO3OH)(OH)6
Oβ“˜ SvanbergiteSrAl3(PO4)(SO4)(OH)6
Oβ“˜ BerliniteAlPO4
Oβ“˜ AugeliteAl2(PO4)(OH)3
Oβ“˜ CelestineSrSO4
Oβ“˜ TrolleiteAl4(PO4)3(OH)3
Oβ“˜ RutileTiO2
Oβ“˜ AmblygoniteLiAl(PO4)F
Oβ“˜ Quartz var. Milky QuartzSiO2
Oβ“˜ HematiteFe2O3
Oβ“˜ CeladoniteK(MgFe3+◻)(Si4O10)(OH)2
FFluorine
Fβ“˜ ApatiteCa5(PO4)3(Cl/F/OH)
Fβ“˜ AmblygoniteLiAl(PO4)F
MgMagnesium
Mgβ“˜ LazuliteMgAl2(PO4)2(OH)2
Mgβ“˜ KornerupineMg3Al6(Si,Al,B)5O21(OH)
Mgβ“˜ CeladoniteK(MgFe3+◻)(Si4O10)(OH)2
AlAluminium
Alβ“˜ BerylBe3Al2(Si6O18)
Alβ“˜ DumortieriteAl(Al2O)(Al2O)2(SiO4)3(BO3)
Alβ“˜ LazuliteMgAl2(PO4)2(OH)2
Alβ“˜ KyaniteAl2(SiO4)O
Alβ“˜ SillimaniteAl2(SiO4)O
Alβ“˜ SpessartineMn32+Al2(SiO4)3
Alβ“˜ KornerupineMg3Al6(Si,Al,B)5O21(OH)
Alβ“˜ Muscovite var. FuchsiteK(Al,Cr)3Si3O10(OH)2
Alβ“˜ Pumpellyite SubgroupCa2XAl2[Si2O6(OH)][SiO4](OH)2A
Alβ“˜ MuscoviteKAl2(AlSi3O10)(OH)2
Alβ“˜ GoyaziteSrAl3(PO4)(PO3OH)(OH)6
Alβ“˜ SvanbergiteSrAl3(PO4)(SO4)(OH)6
Alβ“˜ BerliniteAlPO4
Alβ“˜ AugeliteAl2(PO4)(OH)3
Alβ“˜ TrolleiteAl4(PO4)3(OH)3
Alβ“˜ AmblygoniteLiAl(PO4)F
SiSilicon
Siβ“˜ BerylBe3Al2(Si6O18)
Siβ“˜ DumortieriteAl(Al2O)(Al2O)2(SiO4)3(BO3)
Siβ“˜ KyaniteAl2(SiO4)O
Siβ“˜ SillimaniteAl2(SiO4)O
Siβ“˜ QuartzSiO2
Siβ“˜ SpessartineMn32+Al2(SiO4)3
Siβ“˜ KornerupineMg3Al6(Si,Al,B)5O21(OH)
Siβ“˜ Muscovite var. FuchsiteK(Al,Cr)3Si3O10(OH)2
Siβ“˜ Pumpellyite SubgroupCa2XAl2[Si2O6(OH)][SiO4](OH)2A
Siβ“˜ MuscoviteKAl2(AlSi3O10)(OH)2
Siβ“˜ Quartz var. Milky QuartzSiO2
Siβ“˜ CeladoniteK(MgFe3+◻)(Si4O10)(OH)2
PPhosphorus
Pβ“˜ ApatiteCa5(PO4)3(Cl/F/OH)
Pβ“˜ LazuliteMgAl2(PO4)2(OH)2
Pβ“˜ GoyaziteSrAl3(PO4)(PO3OH)(OH)6
Pβ“˜ SvanbergiteSrAl3(PO4)(SO4)(OH)6
Pβ“˜ BerliniteAlPO4
Pβ“˜ AugeliteAl2(PO4)(OH)3
Pβ“˜ TrolleiteAl4(PO4)3(OH)3
Pβ“˜ AmblygoniteLiAl(PO4)F
SSulfur
Sβ“˜ SvanbergiteSrAl3(PO4)(SO4)(OH)6
Sβ“˜ CelestineSrSO4
ClChlorine
Clβ“˜ ApatiteCa5(PO4)3(Cl/F/OH)
KPotassium
Kβ“˜ Muscovite var. FuchsiteK(Al,Cr)3Si3O10(OH)2
Kβ“˜ MuscoviteKAl2(AlSi3O10)(OH)2
Kβ“˜ CeladoniteK(MgFe3+◻)(Si4O10)(OH)2
CaCalcium
Caβ“˜ ApatiteCa5(PO4)3(Cl/F/OH)
Caβ“˜ Pumpellyite SubgroupCa2XAl2[Si2O6(OH)][SiO4](OH)2A
TiTitanium
Tiβ“˜ RutileTiO2
CrChromium
Crβ“˜ Muscovite var. FuchsiteK(Al,Cr)3Si3O10(OH)2
MnManganese
Mnβ“˜ SpessartineMn32+Al2(SiO4)3
FeIron
Feβ“˜ HematiteFe2O3
Feβ“˜ CeladoniteK(MgFe3+◻)(Si4O10)(OH)2
SrStrontium
Srβ“˜ GoyaziteSrAl3(PO4)(PO3OH)(OH)6
Srβ“˜ SvanbergiteSrAl3(PO4)(SO4)(OH)6
Srβ“˜ CelestineSrSO4

Localities in this Region

Other Regions, Features and Areas that Intersect

Madagascar
Somali PlateTectonic Plate

This page contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.

References

 
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