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Wolframite

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MNT112938

Wolframite

ex Dr. F. Krantz - no old label
Classic Locality

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Description
Locality: 
Zinnwald, Saxony, Germany
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3 × 2.3 × 2 cm
Description

Wolframite crystals from Zinnwald are very rarely seen nowadays. This (seems to be twinned) gunmetal black (unfortunately incomplete) wolframite dates from the 19th century. Rare old timer from Krantz, no old label. Nice example.

Mineral Data
What's on the rock

Wolframite

Synonym Of: 

Hübnerite

Formula: 
MnWO4
Strunz: 
4.DB.30
Hardness: 
4.0 - 4.5

Ferberite

Formula: 
FeWO4
Strunz: 
4.DB.30
Hardness: 
4.0 - 4.5
Formula: 
(Fe2+)WO4 to (Mn2+)WO4
Crystal System: 
Monoclinic
Hardness: 
4 - 4.5
Colour: 
Greyish-black
Streak: 
Reddish Brown

Seller Information

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Seller's terms and conditions

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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