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Itremo massif, Itremo 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:~34km
Locality type:Massif
Köppen climate type:Cwb : Subtropical highland climate or temperate oceanic climate with dry winters
Name(s) in local language(s):Tangorombohitr' Itremo, Kaominin' Itremo, Distrikan' Ambatofinandrahana, Faritra Amoron'i Mania, Faritanin'i Fianarantsoa, 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 km² 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




Mineral List

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

16 valid minerals.

Rock Types Recorded

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Madagascar

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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Fernandez, A., Schreurs, G., Villa, I.M., Huber, S., and Rakotondrazafy, M. (2003) Age constraints on the tectonic evolution of the Itremo region in central Madagascar. Precambrian Research: 123: 87-110.
Pezzotta, F.(1999): Madagaskar. Das Paradies der Mineralien und Edelsteine. ExtraLapis nr 17, p.82 [german version, short notice]
Pezzotta, F. (2005) A first attempt to the petrogenesis and the classification of granitic pegmatites of the Itremo Region (central Madagascar). International Meeting on Crystallization Processes in Granitic Pegmatites (Elba) Abstract (www.elba-pegmatites.org).
Hyršl, J. & Praszkier, T. (2015): Neufunde von Japaner-Zwillingen in Madagaskar. Mineralien-Welt. 26 (1), 48-51

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