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Offretite On Lévyne

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PCZ124837

Offretite On Lévyne

Description Tabs

Description
Locality: 
Ladyhill Quarry, Antrim, County Antrim, Northern Ireland, United Kingdom
Size Range: 
Miniature (4.5-7 cm)
Size: 
5 × 3 × 2 cm
Description

A thin layer of offretite coating tabular levyne crystals in a number of basalt vugs. A nice typical specimen from the locality.

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