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1 - Boleite (T (Min)
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Betechtinite - Dzhezkazgan mine - Dzhezkazgan - Karagandy prov. - Kazakhstan
(#:MINS7849)
The dark zone is completely made by crystals of betechtinite and bornite. Specimen with Betechtinite crystals up to 1,0 cm long with blue metallic colour richly set on white contrasting matrix.High quality specimen for this rare mineral
Formula :
Cu
10
(Fe,Pb)S
6
System:
orthorhombic
Hardness:
3-3½
Rarity:
very rare
Strunz id:II/B.2-10 - SULFIDES
Name origin:
For Anatolii Georgievich Betekhtin (1897-1962), Russian mineralogist and economic geologist.
Specimen weight:43 gr.
Crystal size:Up to 1,0 cm long
Overall size: 58mm x 35 mm x 22 mm
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