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Zincian Dolomite & Dioptase

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MNT970518

Zincian Dolomite & Dioptase

ex D. Nickolay coll. (GER)
Classic Locality

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Description
Locality: 
Tsumeb Mine, Otavi Highlands, Namibia
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.2 × 1.8 × 1 cm
Weight: 
8.00gr
Description

From the D. Nickolay collection comes this nice toenail with intense green dioptase crystals and small glassy lustrous crystals of zincian dolomite. The specimen was labeled to be minrecordite on dioptase but analysis showed a distinct but insufficient Zn content to name it minrecordite.

 

Mineral Data
What's on the rock

Zincian Dolomite

Variety Of: 

Dolomite

Formula: 
CaMg(CO3)2
Strunz: 
5.AB.10
Hardness: 
3.5 - 4.0
Formula: 
Ca(Mg,Zn)(CO3)2
Hardness: 
0.0

Dioptase

Formula: 
CuSiO3·H2O
Strunz: 
9.CJ.30
Crystal System: 
Trigonal
Hardness: 
5.0
Streak: 
Green
Type Locality: 
Altyn-Tyube dioptase deposit (Altyn-Tube), Altyn-Tyube area, Kirghiz Steppes (Asiatic Steppes), Karagandy Province (Qaragandy Oblysy; Karaganda Oblast'), Kazakhstan...

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Terms & Conditions

Thank you for your interest in my offers! Payment is possible via Paypal, bank transfer or cash if you pick up the item(s) personally. Bank data will be provided after settling the auction/transaction(s) if needed.

In case you are not happy with a specimen, you may send it back within 4 weeks. After receipt, i will refund the price minus shipping costs. Please inform me before sending an item back. If you have any questions (or maybe complaints) please feel free to contact me.

Best regards Roger

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