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Sphalerite & Calcite

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MGR777209

Sphalerite & Calcite

Floater

Description Tabs

Description
Locality: 
Troya Mine, Mutiloa, Guipúzcoa, Basque Country, Spain
Class: 
Combination
Size Range: 
Miniature (4.5-7 cm)
Size: 
5.9 × 4.3 × 2.3 cm
Description

Rare classic stuff from Spain. The specimen is developed as floater, it consists of uncountable, sparkling, sharp sphalerite crystals, which seem to glow even with minor light source. The intense red-brown color shows a spectacular contrast to the sharp terminated, tiny yellow calcite crystals, which are scattered all over the piece.

Mineral Data
What's on the rock

Sphalerite

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

Calcite

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