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Tetrahedrite & Quartz

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RBR177755

Description Tabs

Description
Locality: 
Pasto Bueno, Ancash Department, Peru
Size Range: 
Cabinet (10-18 cm)
Size: 
11 × 8 × 2.5 cm
Description

That's a very attractive specimen with non-typical crystals of tetrahedite. The crystals are attractivly set on a matrix of tiny, white quartz-crystals. The contrast is excellent. The crystals are up to 1,5 cm large and free of damage. Both sides of the specimen are covered at this attractive item.

Mineral Data
What's on the rock

Tetrahedrite

Formula: 
Cu6[Cu4(Fe,Zn)2]Sb4S13
Strunz: 
2.GB.05
Hardness: 
3.5 - 4.0

Quartz

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