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Cassiterite With Calcite & Quartz

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BMM884981

Cassiterite With Calcite & 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: 
5.5 × 3.3 × 2.7 cm
Description

Translucent crystals of dark brown cassiterite in combination with pale yellow leaved calcites and small quartz crystals. The cassiterite crystals are sharp terminated with high gloss surfaces which show a fine striped structure. No significant damage to report - a quartz crystal is broken but healed again.

Mineral Data
What's on the rock

Cassiterite

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

Calcite

Polymorph of: 
Formula: 
CaCO3
Strunz: 
5.AB.05
Crystal System: 
Trigonal
Hardness: 
3.0
Streak: 
White

Quartz

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