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Chrysocolla

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MNT34010

Chrysocolla

Ex Dr F Krantz (Bonn, Germany), Ex ?
With Antique Label

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Description Tabs

Description
Locality: 
West Cumberland Area, Cumbria, United Kingdom
Size Range: 
Miniature (4.5-7 cm)
Size: 
4.2 × 4.5 × 4 cm
Description

Nice and colourful old timer from the 19th century: botryoidal masses of bluish green chrysocolla with some darker green (malachite?) secondary copper mineral. Comes with old hand written label which only says Cumberland, no mine specified. Maybe the Cumbria cracks out there in the web know more!

From the Dr. Krantz stock, Bonn, GER, previous owner/collector unknown to me.

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

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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.

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Best regards Roger

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