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Piemontite

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AST1038534

Piemontite

Description Tabs

Description
Locality: 
Trikorfo, Theologos, Thasos, East Macedonia and Thrace, Greece
Class: 
Massive/Crystalline
Size Range: 
Small cabinet (7-10 cm)
Size: 
8 × 6 × 3.5 cm
Description

Very rich specimen of red-violet piemontite (Mn-epidote) on both sides of quartz rich metamorphic matrix. 

Mineral Data
What's on the rock

Piemontite

Formula: 
{Ca2}{Al2Mn3+}(Si2O7)(SiO4)O(OH)
Strunz: 
9.BG.05
Hardness: 
6.0 - 6.5
Streak: 
Reddish
Type Locality: 
Prabornaz Mine (Praborna Mine), Saint-Marcel, Aosta Valley, Italy

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