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Gratonite

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JYJ846807

Gratonite

Description Tabs

Description
Locality: 
Rio Tinto Mines, Huelva, Andalusia, Spain
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3 × 2.5 × 2.3 cm
Description

Black to dark grey metallic gratonite from the Rio Tinto mines, Andalusia, Spain. 

 

Mineral Data
What's on the rock

Gratonite

Formula: 
Pb9As4S15
Strunz: 
2.JB.55
Hardness: 
2.5
Streak: 
Black
Type Locality: 
Excelsior Mine, Cerro de Pasco, Pasco province, Pasco department, Peru