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Gold With Malachite & Chalcocite & Feldspar

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LGM963401

Gold With Malachite & Chalcocite & Feldspar

ex M. Ruppe-Rohe, Neustadt a. d. Weinstrasse, Germany
Classic Locality

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Description Tabs

Description
Locality: 
Natas Mine, Natas Farm 220, Gamsberg, Windhoek Rural, Khomas Region, Namibia
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
3.5 × 5.3 × 1.8 cm
Weight: 
55.80gr
Description

Ore specimen consisting of masses of blackish chalcocite in the center and green malachite at the edges of the copper mineralization. Cream-colored feldspar showing cleavage faces is also present (see pic 7 where the sticker is glued on). Some mm-sized crystallized gold blebs are to be found near to the chalcocite.

Likely from the 70's or 80's, when the german dealer M. Ruppe-Rohe was active. Unfortunately no further information is availabble about this dealer.

Mineral Data
What's on the rock

Gold

Formula: 
Au
Strunz: 
1.AA.05
Crystal System: 
Isometric
Hardness: 
2.5 - 3.0

Malachite

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

Chalcocite

Formula: 
Cu2S
Strunz: 
2.BA.05
Crystal System: 
Monoclinic
Hardness: 
2.5 - 3.0

Feldspar

Group Parent: 
Feldspar Group

Seller Information

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