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Sphalerite & Prehnite

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SKI664503

Sphalerite & Prehnite

Description Tabs

Description
Locality: 
Burgberg Quarry, Steffenberg, Marburg-Biedenkopf, Giessen Region, Hesse, Germany
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
4 × 3.3 × 2 cm
Largest Crystal: 
0.40cm
Description

A transparent, mint-green octahedral sphalerite on pale green prehnite and colorless calcite. A sample from Trautvetter diabase quarry. Crystal is not complete. Base is formated by a saw cut.

Mineral Data
What's on the rock

Sphalerite

Formula: 
ZnS
Strunz: 
2.CB.05a
Crystal System: 
Isometric
Hardness: 
3.5 - 4.0

Prehnite

Formula: 
Ca2Al2Si3O10(OH)2
Strunz: 
9.DP.20
Hardness: 
6.0 - 6.5
Streak: 
White
Type Locality: 
Karoo dolerites, Cradock, Chris Hani District, Eastern Cape Province, South Africa

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