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Offretite

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SHS168423

Offretite

Description Tabs

Description
Locality: 
Schrimpf Basalt Works, Herbstein, Vogelsberg, Giessen Region, Hesse, Germany
Class: 
Single Crystal
Size Range: 
Thumbnail (1-3cm)
Size: 
2 × 1.8 × 1.4 cm
Description

Offretite crystals on matrix

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