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Bauxite

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NST617555

Bauxite

Description Tabs

Description
Locality: 
Sierra Minerals Holdings Mine, Pujehun District, Southern Province, Sierra Leone
Class: 
Massive/Crystalline
Size Range: 
Miniature (4.5-7 cm)
Size: 
6.5 × 4.5 × 2.8 cm
Description

A sample of layered bauxite from Sierra Leone.

Sierra Minerals is the only bauxite mine in Sierra Leone and is the second largest mining employer in the country. The mine has a resource base of approximately 31 million tonnes of bauxite and currently produces around 1.2 million tonnes per annum for export. Sierra Leone's production of bauxite is around one percent of the total global production.

Mineral Data
What's on the rock

Bauxite

Mixture Of: 

Böhmite

Formula: 
AlO(OH)
Strunz: 
4.FE.15
Hardness: 
3.5

Diaspore

Formula: 
AlO(OH)
Strunz: 
4.FD.10
Hardness: 
6.5 - 7.0

Gibbsite

Formula: 
Al(OH)3
Strunz: 
4.FE.10
Hardness: 
2.5 - 3.0