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Offretite

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CHA688604

Offretite

Classic Locality

Description Tabs

Description
Locality: 
Vinarice, Kladno, Central Bohemian Region, Czech Republic
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.9 × 2.3 × 1.9 cm
Description

specimen with some cavities covered by prismatic exagonal yellow or colourless crystals of offetite

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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