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Chrysocolla Malachite & Heterogenite

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MNT692138

Chrysocolla Malachite & Heterogenite

ex Dr. F. Krantz, Bonn, GER
Classic Locality

Description Tabs

Description
Locality: 
Kabolela Mine, Kolwezi, Lualaba, DR Congo
Class: 
Massive/Crystalline
Size Range: 
Miniature (4.5-7 cm)
Size: 
6 × 4.6 × 4 cm
Description

Older congolese classic from Kabolela: blackish botryoidal heterogenite is covered by blueish chrysocolla with a thin malachite layer on top. First half of the 20th century specimen.

Please note: postage costs and procedures have changed since Jan. 1st 2019 here in GER. The given tariffs are those on the "safe" side (tracked DHL for international shipping - limit 2 kg total). I am working on a solution that may revert to the former (cheaper) tariffs - as long as i don´t have a confirmation you are welcome to stockpile items to optimize shipping costs. I will inform you about any changes ASAP.

Mineral Data
What's on the rock

Chrysocolla

Formula: 
Cu2-xAlx(H2-xSi2O5)(OH)4·nH2O (x < 1)
Strunz: 
9.ED.20
Crystal System: 
Monoclinic
Hardness: 
2.5 - 3.5

Malachite

Formula: 
Cu2(CO3)(OH)2
Strunz: 
5.BA.10
Crystal System: 
Monoclinic
Hardness: 
3.5 - 4.0

Heterogenite

Formula: 
CoO(OH)
Strunz: 
4.FE.20
Crystal System: 
Trigonal
Hardness: 
3.0 - 5.0
Type Locality: 
Wolfgang Maaßen Mine field, Schneeberg District, Erzgebirge, Saxony, Germany

Seller Information

Payment options: offline, paypal_wpp, paypal_wps

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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