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Calcite & Zincian Dolomite

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MNT557878

Calcite & Zincian Dolomite

ex P. Muhl collection, Herdorf, GER
Classic Locality

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Description
Locality: 
Tsumeb Mine, Otavi Highlands, Namibia
Class: 
Crystals on Matrix
Size Range: 
Cabinet (10-18 cm)
Size: 
11.1 × 8 × 2.6 cm
Description

A nice Tsumeb classic: tan beige translucent calcite crystals on a cast of (zincian?) dolomite, the backside is totally covered with calcite crystals. Few bruises, most of the calcite crystals on the cast front are intact.

Mineral Data
What's on the rock

Calcite

Polymorph of: 
Aragonite and Vaterite
Formula: 
CaCO3
Strunz: 
5.AB.05
Crystal System: 
Trigonal
Hardness: 
3.0
Streak: 
White

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

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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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