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Tennantite Chalcopyrite & Sphalerite

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PFK918236

Tennantite Chalcopyrite & Sphalerite

Classic Locality

Description Tabs

Description
Locality: 
Madem-Lakko Mine, Cassandra Mines, Aristotelis, Chalkidiki, Central Macedonia, Greece
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
6.6 × 3.8 × 2.4 cm
Description

Old classic rarity from this old, closed mine. whatever is covered with golden chalcopyrite is crystals of tennantite! The black crystals are sphalerite. Tennantites from Chalkidiki are rare and this is an excellent, rich example with the chalcopyrite bonus and sphalerite association!

Mineral Data
What's on the rock

Tennantite

Formula: 
Cu6[Cu4(Fe,Zn)2]As4S13
Strunz: 
2.GB.05
Crystal System: 
Isometric
Hardness: 
3.0 - 4.5
Type Locality: 
Cornwall, England, UK

Chalcopyrite

Formula: 
CuFeS2
Strunz: 
2.CB.10a
Crystal System: 
Tetragonal
Hardness: 
3.5 - 4.0

Sphalerite

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

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