Pribram - Brezove Hory, CZ

Item-No.: 0300262
Price: 50.00 EUR 

Tedraedrite, Siderite

Březové Hory ore region (Birkenberg), Příbram, Central Bohemia Region, Bohemia, Czech Republic

Item-No.: 0300258
Price: 35.00 EUR 


Cavnic (Kapnic), Maramures, Co., Romania

Item-No.: MIN6197
Price: 360.00 EUR 

Tetraedrite, Sfalerite (va. Cleophan)

Cavnic (Kapnic), Maramures, Co., Romania

Item-No.: MIN5827
Price: 185.00 EUR 

Synonyms:  Aftonite, Aphthonite, Falkenhaynite, Fieldite, Nepaulite, Panabase, Studerite
Classification:  Sulfides, Tetrahedrite Group
Chemical formula:  Cu10(Fe,Zn)2Sb4S13
Crystal system:  Isometric
Density (g/cm3):  4,97 measured, 4,99 calculated
Tenacity:  Brittle
Cleavage:  Non observed
Fracture:  Sub-conchoidal
Hardness (Mohs):  3 - 4,5
Colour:  Steel- to iron-gray or to olive brown
Lustre:  Metallic
Streak:  Black, brown to dark red
Type locality:  Copiapó, Copiapó Province, Atacama Region, Chile
Application:  Important ore of copper