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Afwillite & Hydrocalumite

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SMM772059

Afwillite & Hydrocalumite

Description Tabs

Description
Locality: 
Caspar Quarry, Bellerberg, Ettringen, Eifel, Mayen-Koblenz, Rhineland-Palatinate, Germany
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
2 × 1.7 × 1.5 cm
Description

Many, colorless nice  prismatic afwillite crystals and milky tabular  hexagonal hydrocalumite. Good specimen.

Boxed with Label
Mineral Data
What's on the rock

Afwillite

Formula: 
Ca3(HSiO4)2·2H2O
Strunz: 
9.AG.75
Crystal System: 
Monoclinic:
Hardness: 
3.0 - 4.0
Streak: 
White
Type Locality: 
Dutoitspan Mine, Kimberley, Francis Baard District, Northern Cape Province, South Africa

Hydrocalumite

Formula: 
Ca4Al2(OH)12(Cl,CO3,OH)2·4H2O
Strunz: 
4.FL.10
Hardness: 
3.0
Type Locality: 
Scawt Hill, Larne, Co. Antrim, Northern Ireland, UK

Seller Information

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