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Eulytine Erythrite & Bismuth

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BCK710462

Eulytine Erythrite & Bismuth

David Burgess Collection
Classic Locality

Description Tabs

Description
Locality: 
Jáchymov, Krušné Hory, Karlovy Vary Region, Czech Republic
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
5.1 × 3.2 × 2.8 cm
Description

You are bidding on a small miniature sample with some small clusters of brown eulytine tetrahedra on matrix vugs with balls of erythrite and other unidentified species. Native bismuth and other metallics are in the matrix. Specimen was collected around 1860 and has a label from the Museum Regni Bohemiae. Eulytine is very rare at the locality and the sample is very vuggy. Trimming may produce additional interesting samples. 

Mineral Data
What's on the rock

Eulytine

Formula: 
Bi4(SiO4)3
Strunz: 
9.AD.40
Hardness: 
4.5
Streak: 
White
Type Locality: 
Schneeberg District, Erzgebirge, Saxony, Germany

Erythrite

Formula: 
Co3(AsO4)2·8H2O
Strunz: 
8.CE.40
Hardness: 
1.5 - 2.5
Type Locality: 
Daniel Mine (St. Daniel Mine), Neustädtel, Schneeberg District, Erzgebirge, Saxony, Germany

Bismuth

Formula: 
Bi
Strunz: 
1.CA.05
Crystal System: 
Hexagonal
Hardness: 
2.0 - 2.5
Type Locality: 
Schneeberg District, Erzgebirge, Saxony, Germany

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