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Offretite

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ZLT143337

Offretite

Type Locality

Description Tabs

Description
Locality: 
Mont Semiol, Châtelneuf, Loire, Auvergne-Rhône-Alpes, France
Size Range: 
Small miniature (3-4.5 cm)
Size: 
1.9 × 3.2 × 1.4 cm
Largest Crystal: 
0.10cm
Description

Selected sample of basaltic rock with prismatic crystals of offretite. Good sample for the species.
Collected in 1981.

Mineral Data
What's on the rock

Offretite

Formula: 
KCaMgAl5Si13O36·16H2O or near
Strunz: 
9.GD.25
Hardness: 
4.0 - 4.5
Type Locality: 
Mont Semiol (Mont Semiouse; Mont Simiouse), Châtelneuf, Saint-Georges-en-Couzan, Loire, Rhône-Alpes, France

Seller Information

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