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Cassiterite On Quartz

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BMM706382

Cassiterite On Quartz

Description Tabs

Description
Locality: 
Viloco Mine, Loayza Province, La Paz Department, Bolivia
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
4.8 × 3.5 × 2.5 cm
Description

Translucent crystals of black cassiterite on white quartz crystals. The cassiterite crystlas are sharp terminated with high gloss surfaces which show a fine striped structure. With backlit, the specimen shows its wonderful translucency brown color. All cassiterite crystals in the center are undamaged!

Mineral Data
What's on the rock

Cassiterite

Formula: 
SnO2
Strunz: 
4.DB.05
Crystal System: 
Tetragonal
Hardness: 
6.0 - 7.0

Quartz

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