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Helvine & Tetrahedrite

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BCK609106

Helvine & Tetrahedrite

Rare Mineral

Description Tabs

Description
Locality: 
Deer Trail Mine, Puite County, Utah, United States of America
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
2.3 × 1.7 × 1.5 cm
Description

You are bidding on a small sample with numerous vugs hosting small rough crystals of helvine with black tetrahderite. Rare locality for helvine!

Mineral Data
What's on the rock

Helvine

Formula: 
Mn2+4(Be3Si3O12)S
Strunz: 
9.FB.10
Crystal System: 
Isometric
Hardness: 
6.0 - 6.5
Streak: 
White
Type Locality: 
Friedefürst Mine, Breitenbrunn, Breitenbrunn District, Erzgebirge, Saxony, Germany

Tetrahedrite

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

Seller Information

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