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Quartz With Ankerite & Calcite

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Quartz With Ankerite & Calcite

La Drôme
Classic Locality

Description Tabs

Description
Locality: 
Gumiane, Drôme, Auvergne-Rhône-Alpes, France
Size Range: 
Small cabinet (7-10 cm)
Size: 
8 × 5 × 8 cm
Largest Crystal: 
1.20cm
Description

A beautiful water clear glassy gemmy quartz crystal is within this cavity. Associated with calcite and ankerite.

Mineral Data
What's on the rock

Quartz

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

Ankerite

Formula: 
Ca(Fe2+,Mg)(CO3)2
Strunz: 
5.AB.10
Crystal System: 
Trigonal
Hardness: 
3.5 - 4.0
Streak: 
White
Type Locality: 
Styrian Erzberg, Eisenerz, Styria, Austria

Calcite

Polymorph of: 
Formula: 
CaCO3
Strunz: 
5.AB.05
Crystal System: 
Trigonal
Hardness: 
3.0
Streak: 
White
MineralsIsland

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