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Bornite With Malachite & Chrysocolla

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LGM172870

Bornite With Malachite & Chrysocolla

Ex Dr. Krantz, Bonn, Germany
With Antique Label

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Description Tabs

Description
Locality: 
Bogoslovsk, Tur'insk-Auerbakovsk, Sverdlovsk Oblast, Russian Federation
Class: 
Massive/Crystalline
Size Range: 
Miniature (4.5-7 cm)
Size: 
3.5 × 6.5 × 3.5 cm
Weight: 
115.00gr
Description

Ore sample consisting of massive reddish-brown bornite (or maybe rather cuprite), green crystalline malachite and blue-green chrysocolla. "Bogoslovsk, Tur'insk-Auerbakovsk ore field, Sverdlovskaya Oblast, Middle Urals, Urals Region, Russia" is a classic russian copper deposit.

From old Dr. Krantz stock, comes with nice old label dated around 1900. "Buntkupfererz" is the german synonym for bornite.

Mineral Data
What's on the rock

Bornite

Formula: 
Cu5FeS4
Strunz: 
2.BA.15
Crystal System: 
Tetragonal
Hardness: 
3.0
Type Locality: 
Jáchymov (St Joachimsthal), Jáchymov District (St Joachimsthal), Krušné Hory Mts (Erzgebirge), Karlovy Vary Region, Bohemia (Böhmen; Boehmen), Czech Republic

Malachite

Formula: 
Cu2(CO3)(OH)2
Strunz: 
5.BA.10
Crystal System: 
Monoclinic
Hardness: 
3.5 - 4.0

Chrysocolla

Formula: 
Cu2-xAlx(H2-xSi2O5)(OH)4·nH2O (x < 1)
Strunz: 
9.ED.20
Crystal System: 
Monoclinic
Hardness: 
2.5 - 3.5

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