Whiteschist   This is a photomicrograph of a high-pressure schist from the famour Dora Maira massif in Italy. The region of coarser-grained quartz in the upper center portion of this photomicrograph was probably originally occopied by coesite, the high-pressure polymorph of quartz. Metamorphic rocks from the Dora Maira Massif show other evidence of being exhumed from EXTREMELY deep levels in thickened crust (>28 kbar), including... * ellenbergerite inclusions in garnet * coesite inclusions in garnet		UNC sample TS-42 (K. Stewart)
		Rock type qtz-ky-gt-musc schist
		Locality Dora Maira Massif, Parigi, Italy