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Wolframite

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PDM739418

Wolframite

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Description
Locality: 
Misimiru, Mwenga, South Kivu, DR Congo
Class: 
Single Crystal
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.7 × 2 × 1.6 cm
Description

Black cleaved wolframite from Misimiru deposit at Mwana, South of Mwenga, that was operated by the M.G.L. (La Compagnie Minière des Grands-Lacs). Detailed information of this locality can be found at Prigogine, A. (1956) & Varlamoff, N. (1958).

Ex. Dr. Bob Janssens specimen, #689.

Varlamoff, N. Les gisements de tungstène au Congo & Ruanda-Urundi. Matériaux pour l’étude de leur géologie & classification. Nat.Sc., (1958). T.VIII,2.

Prigogine, A. (1956). Concentration des minerais de wolfram et de niobium-tantale au Congo belge et au Ruanda-Urundi. 199pp.

Mineral Data
What's on the rock

Wolframite

Synonym Of: 

Hübnerite

Formula: 
MnWO4
Strunz: 
4.DB.30
Hardness: 
4.0 - 4.5

Ferberite

Formula: 
FeWO4
Strunz: 
4.DB.30
Hardness: 
4.0 - 4.5
Formula: 
(Fe2+)WO4 to (Mn2+)WO4
Crystal System: 
Monoclinic
Hardness: 
4 - 4.5
Colour: 
Greyish-black
Streak: 
Reddish Brown

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