Minerals identify

Know how to recognize them

Piemontite

Sorosilicates,epidote

Piemontite is a sorosilicate in the monoclinic with the chemical formula Ca2(Al,Mn3+,Fe3+)3(SiO4)(Si2O7)O(OH). group.

Red to reddish-brown or red-black in colour, Piemontite has a red streak

The type locality is the Prabornaz Mine, in Saint-Marcel , Italy

It occurs metamorphic rocks of the greenschist metamorphic facies and in low-temperature hydrothermal veins. It also occurs in metasomatized ore, tremolite, quartz

Identification

Mohs scale ( mineral hardness )

6

Density ( specific gravity )

1.725
1.73
1.75

Crystal ( diaphaneity )

Monoclinic