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Tantalcarbide

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SKY762646

Tantalcarbide

Type Locality

Description Tabs

Description
Locality: 
Avrorinskii Placer, Aktai River, Baranchinsky Massif, Nizhnii Tagil, Sverdlovsk Oblast, Russian Federation
Class: 
Single Crystal
Size Range: 
Micromount (under 1cm)
Size: 
0.02 × 0.015 × 0.01 cm
Description

Unpolished microprobe preparate with a 0,20 x 0,15 x 0,10 mm grain of bronze-pinkish Tantalcarbide from the type and only known locality worldwide, completely analyzed.  The exact formula of this specimen is (Ta0,80Nb0,20)C.

Together with the specimen you will receive its certificate with the tantalcarbide analysis, SEM photo with marked point of analysis, EDX spectrum and description of the find. The reason of the coin as a support is that a conductive surface is needed in order to analyze the specimen by SEM/EDX. However this coin can be very easily removed if desired by the buyer.

Part of holotype, portion of original material sold by Krantz to FMM in 1912 and collected at the beginning of XX century. This material was investigated and led to an article describing the new isomorphous series TaC-NbC from platinum placers of the Urals (see photo with details of this article)

Mineral Data
What's on the rock

Tantalcarbide

Formula: 
TaC
Strunz: 
1.BA.20
Crystal System: 
Isometric
Hardness: 
6.0 - 7.0
Colour: 
Bronze
Type Locality: 
Avrorinskii Placer, Aktai River, Baranchinsky Massif, Nizhnii Tagil, Sverdlovskaya Oblast', Middle Urals, Urals Region, Russia...

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