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Fersmite

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PDM648707

Fersmite

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Description
Locality: 
Lueshe Mine, North Kivu, DR Congo
Class: 
Massive/Crystalline
Size Range: 
Thumbnail (1-3cm)
Size: 
1.8 × 1.8 × 0.4 cm
Description

Concentrate of black fersmite crystals collected in the streams near the Lueshe mine area (Kivu).

Ex. Francis Coune specimen, who bought it in 1981.

Mineral Data
What's on the rock

Fersmite

Formula: 
(Ca,Y)(Nb,Ta,Ti)2(O,OH)6
Strunz: 
4.DG.05
Hardness: 
4.0 - 4.5
Type Locality: 
Vein No. 37A, Buldym Lake, Vishnevye Mts (Vishnyovye; Cherry), Chelyabinsk Oblast', Southern Urals, Urals Region, Russia...

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