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Cassiterite

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PDM640072

Cassiterite

Floater

Description Tabs

Description
Locality: 
Lutsiro, Sebeya River, Kabaya District, Western Province, Rwanda
Class: 
Crystal Group/Cluster
Size Range: 
Miniature (4.5-7 cm)
Size: 
6.3 × 5.5 × 2.8 cm
Description

An impressive dark brown to black aggregate of flattened terminated crystal of cassiterite with moderate lustre and net definition of edges and faces. It is a floater in very good condition, with just a minor contact point to the matrix. Uncommon good size specimen for the locality.

It was in the collection of J.Detaille, a Belgian colonist to Rwanda.

Mineral Data
What's on the rock

Cassiterite

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

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