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Opal Var Lussatite Psm Fossil

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TBM847713

Opal Var Lussatite Psm Fossil

Description Tabs

Description
Locality: 
Puy du Mur Quarry, Mur-sur-Allier, Puy-de-Dôme, Auvergne-Rhône-Alpes, France
Class: 
Massive/Crystalline
Size Range: 
Thumbnail (1-3cm)
Size: 
1.8 × 1.5 × 1.2 cm
Weight: 
3.00gr
Description

Rare miocenic helix fossil trasformated into Opal.

Mineral Data
What's on the rock

Opal

Formula: 
SiO2·nH2O
Strunz: 
4.DA.10
Hardness: 
5.5 - 6.5
Streak: 
White

Lussatite

Renamed To: 

Opal-CT

Formula: 
SiO2·nH2O
Hardness: 
0.0
Type Locality: 
Lussat, Puy-de-Dôme, Auvergne, France