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Offretite

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ZLT803997

Offretite

Type Locality

Description Tabs

Description
Locality: 
Mont Semiol, Châtelneuf, Loire, Auvergne-Rhône-Alpes, France
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
1.2 × 1 × 0.5 cm
Description

Offretite as short columnar, translucent crystals of about 0.5 mm. Collected 1981. J54-C3F.

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

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