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Jennite & Ettringite

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BCK609086

Jennite & Ettringite

Rare Mineral

Description Tabs

Description
Locality: 
Bellerberg, Ettringen, Eifel Mountains, Rhineland-Palatinate, Germany
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
1.6 × 1 × 1.1 cm
Description

You are bidding on a small sample with very rich sprays of accicular jennite crystals and numerous transparent ettringite prisms. Very rich specimen and better than my photos suggest. 

Mineral Data
What's on the rock

Jennite

Formula: 
Ca9(Si3O9)2(OH)8·8H2O
Strunz: 
9.DG.20
Hardness: 
3.5
Colour: 
White
Type Locality: 
Crestmore quarries, Crestmore, Riverside Co., California, USA

Ettringite

Formula: 
Ca6Al2(SO4)3(OH)12·26H2O
Strunz: 
7.DG.15
Hardness: 
2.0 - 2.5
Type Locality: 
Ettringer Feld, Western lava flow, Bellerberg volcano, Ettringen, Mayen, Eifel, Rhineland-Palatinate, Germany

Seller Information

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