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Offretite

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MEX536942

Offretite

Found 27.04.1996
Rare Mineral

Description Tabs

Description
Locality: 
Schrimpf Basalt Works, Herbstein, Vogelsberg, Giessen Region, Hesse, Germany
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
2.2 × 1.3 × 1.1 cm
Description

Well terminated balls and disks on a vug wall of basalte.

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