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Wolframite

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PDM739410

Wolframite

Description Tabs

Description
Locality: 
Kamilanga, Pangi, Maniema, DR Congo
Class: 
Crystal Group/Cluster
Size Range: 
Small cabinet (7-10 cm)
Size: 
7.5 × 4.1 × 2.8 cm
Description

Black crystal group of crystallized wolframite with minor quartz and phyllosilicates from Kamilanga, (Pangi), that was operated by Cobelmin (Compagnie Belge d'entreprises Minières).

Recovered in the late 1950’s by Gabriel Fauvart. Mr Fauvart was working in the port of Antwerp, and he had access to ore shipments, coming to Antwerp, from all around the world. Detailed information of this locality can be found at Prigogine, A. (1956) & Varlamoff, N. (1958). The specimen was included in a sampling paper bag (now completely destroyed) of “J. Nieberding & Fils”. The company “Jules Nieberding & Fils” operated with this name and address after the Second World War, at the Asiadonk (Port of Antwerp), loading, sampling and analysing mineral ores passing through the port.

 

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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