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Betekhtinite

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WND862812

Betekhtinite

Rare Mineral
Classic Locality

Description Tabs

Description
Locality: 
Dzhezkazgan, Karaganda Oblast, Kazakhstan
Class: 
Crystals on Matrix
Size Range: 
Cabinet (10-18 cm)
Size: 
12.9 × 7.9 × 6.1 cm
Description

A super specimen with large, anthracite-gray matchstick shaped crystals of Betekhtinite. Betekhtinite is a rare copper, iron, lead sulfide. This superb example is likely from the famous discovery of 1998, which produced the best of the species known for this mineral to date. The Betekhtinite has good luster and parallel-growth lathes that average 1-2 cm in length. While not glamorous in colour, it is choice in size and display aesthetics for what it is, and very hard to obtain in such quality.

Mineral Data
What's on the rock

Betekhtinite

Formula: 
(Cu,Fe)21Pb2S15
Strunz: 
2.BE.05
Crystal System: 
Orthorhombic
Hardness: 
3.0 - 3.5
Colour: 
Black
Streak: 
Black
Type Locality: 
Ernst Thälmann Shaft (Vitzthum Shaft), Hübitz, Siersleben, Mansfeld Basin, Saxony-Anhalt, Germany
Wendel Minerals

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