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Helvine

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CHA780165

Helvine

Classic Locality

Description Tabs

Description
Locality: 
Navegadora Claim, Penha do Norte, Conselheiro Pena, Minas Gerais, Brazil
Class: 
Crystal Group/Cluster
Size Range: 
Thumbnail (1-3cm)
Size: 
1.1 × 1 × 0.9 cm
Description

a very nice group of yellow-gray tetrahedric crystals of helvite

For value the dimension of the crystals I remenber you that the photos of my specimens are taken at only 20/40 enlargement!

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

Seller Information

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