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Chalcopyrite Limonite & Quartz

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MNT70814

Chalcopyrite Limonite & Quartz

Ex Dr F Krantz (Bonn Germany), ex ?
Classic Locality

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Description
Locality: 
Cerro Blanco District, Copiapó Province, Atacama Region, Chile
Size Range: 
Cabinet (10-18 cm)
Size: 
10.5 × 5.5 × 4.5 cm
Description

A 19th century classic from the Dr. F. Krantz stock but with obviously a former collectors provenance: altered chalcopyrite crystals with limonite coatings (and in part totally replaced in parts) settle on partly iron-staines quartz crystals. It is from Cerro Blanco, Chile. Rare old timer with historic label attached on the back.

I am not able to decipher the first two words clearly, they could define the mine. The quite unknown huge old Cu-Ag-Pb district of Cerro Blanco in the Copiapo province, now abandoned, was very active during silver and copper ages (1800 to first 50 years of the 20th century and hosts a considerable number of veins and mine properties. 389 g.

Mineral Data
What's on the rock

Chalcopyrite

Formula: 
CuFeS2
Strunz: 
2.CB.10a
Crystal System: 
Tetragonal
Hardness: 
3.5 - 4.0

Quartz

Formula: 
SiO2
Strunz: 
4.DA.05
Crystal System: 
Trigonal
Hardness: 
7.0
Streak: 
White

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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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