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Sphalerite Quartz & Calcite

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NST677437

Sphalerite Quartz & Calcite

Description Tabs

Description
Locality: 
Lautenthal, Goslar, Lower Saxony, Germany
Class: 
Crystal Group/Cluster
Size Range: 
Small cabinet (7-10 cm)
Size: 
8.5 × 6.8 × 2.5 cm
Largest Crystal: 
5.50cm
Description

A phantastic large aggregate of Sphalerite, measuring 5.5 cm, covered by Quartz and Calcite, from Harz mountains. Most likely a historic one from Lautenthal.

Mineral Data
What's on the rock

Sphalerite

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

Quartz

Formula: 
SiO2
Strunz: 
4.DA.05
Crystal System: 
Trigonal
Hardness: 
7.0
Streak: 
White

Calcite

Polymorph of: 
Formula: 
CaCO3
Strunz: 
5.AB.05
Crystal System: 
Trigonal
Hardness: 
3.0
Streak: 
White