Massiccio Dora Maira, Cuneo, Piemonte, Italia
Very high pressure metamorphism of Mg-rich pelites, at depths over 100 km, have created this very unusual pyrope-coesite-quartzite, now exposed in the Western Alps. Famous for its (nearly) colorless, very pure pyrope (over 95% pyrope molecule) as crude crystals up to coconut size. High-pressure phases like ellenbergerite and coesite are preserved only as inclusions in the pyrope, not in the surrounding matrix.
The main composition of the quartzite is: quartz, phengite, talc, kyanite, pyrope.
Mineral ListMineral list contains entries from the region specified including sub-localities
76 entries listed. 45 valid minerals. 6 type localities (valid minerals).
Localities in this Region
The above list 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.
- Hermann, J. (2003) Experimental evidence for diamond-facies metamorphism in the Dora-Maira massif. Lithos 70: 163-182.
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Locality Updated: Alais meteorite, Gard, Languedoc-Roussillon, FranceFrom Chester S. Lemanski, Jr., 9th Dec 2013 20:24:42