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Dioptase & Plancheite

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MNT132341

Dioptase & Plancheite

ex Dr. Krantz (GER) - no old label
Classic Locality

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Description
Locality: 
Mindouli, Pool Region, Congo (Republic)
Size Range: 
Small cabinet (7-10 cm)
Size: 
7 × 3.7 × 4.3 cm
Description

More a modern classic from Brazzaville (probably Mindouli): dioptase crystals up to more than 1 cm are accompanied by skyblue masses of probably plancheite (wouldn´t rule out shattuckite though). Better in person than in the pictures, dioptase is quite resisting to be photographed :-) 

Mineral Data
What's on the rock

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...

Plancheite

Formula: 
Cu8(Si8O22)(OH)4·H2O
Strunz: 
9.DB.35
Crystal System: 
Orthorhombic
Hardness: 
6.0
Type Locality: 
Sanda carriere (Sanda quarry; Sanda Mine), Mindouli, Mindouli District, Pool Department, Republic of Congo (Brazzaville)

Seller Information

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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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