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Piemontite & Quartz

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LAV149798

Piemontite & Quartz

Karystos

Description Tabs

Description
Locality: 
Karystos, Euboea Island, Central Greece, Greece
Class: 
Crystals on Matrix
Size Range: 
Cabinet (10-18 cm)
Size: 
6.5 × 12.5 × 4.2 cm
Description

Small  crystals into massive rock quartz. The specimen is suitable for polishing.

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

Quartz

Formula: 
SiO2
Strunz: 
4.DA.05
Crystal System: 
Trigonal
Hardness: 
7.0
Streak: 
White