こうれんせき
紅簾石
1. piedmontite; piemontite; manganese epidote
2. PiemontitePiemontite is a sorosilicate mineral in the monoclinic crystal system with the chemical formula Ca2(Al,Mn,Fe)3(SiO4)(Si2O7)O(OH). It is a member of the epidote group. Red to reddish-brown or red-black in colour, Piemontite has a red streak and a vitreous lustre. The type locality is the Prabornaz Mine, in Saint-Marcel, Aosta Valley, Italy. It occurs metamorphic rocks of the greenschist to amphibolite metamorphic facies and in low-temperature hydrothermal veins in altered volcanic rocks.
Read “Piemontite” on English Wikipedia
Read “紅簾石” on Japanese Wikipedia
Read “Piemontite” on DBpedia
Read “Piemontite” on English Wikipedia
Read “紅簾石” on Japanese Wikipedia
Read “Piemontite” on DBpedia
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