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Cuprian Scheelite With Cuprotungstite On Biotite

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CLB127358

Cuprian Scheelite With Cuprotungstite On Biotite

ex coll. Jörg Dobrzewski
Rare Mineral

Description Tabs

Description
Locality: 
Natas Mine, Natas Farm 220, Gamsberg, Windhoek Rural, Khomas Region, Namibia
Size Range: 
Miniature (4.5-7 cm)
Size: 
5.1 × 3.5 × 2.4 cm
Largest Crystal: 
0.60cm
Description

Two good, moss-green crystals of cuprian scheelite and, what I believe to be grass-green cuprotungstite (cuprotungstite was also called 'cuproscheelite' - I did not mix this up!). Not 100% excellent but for such a rare specimen very good. For me the highlight of this auction.

Mineral Data
What's on the rock

Cuprian Scheelite

Variety Of: 

Scheelite

Formula: 
Ca(WO4)
Strunz: 
7.GA.05
Hardness: 
4.5 - 5.0
Formula: 
(Ca,Cu)WO4
Hardness: 
0.0

Cuprotungstite

Formula: 
Cu2(WO4)(OH)2
Strunz: 
7.GB.15
Hardness: 
4.0 - 5.0
Type Locality: 
La Paz, Mun. de La Paz, Baja California Sur (BC Sur), Mexico

Biotite

Group Parent: 
Mica Group

Seller Information

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