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Malachite & Murdochite

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CSW142436

Malachite & Murdochite

Ex Arthur L Flagg Collection - collected 1937

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Description
Locality: 
Copper Queen Mine, Bisbee, Warren District, Cochise County, Arizona, United States of America
Size Range: 
Small miniature (3-4.5 cm)
Size: 
4.2 × 3.2 × 1.2 cm
Description

Limonitic matrix with one face showing an exceptionally rich coverage of bright green acicular malachite crystals. Jet black micro crystals of murdochite can be seen at the ends of many of the malachite crystals. This acicular habit is uncommon at the locality and this specimen was collected in 1937 by Arthur L Flagg, Arizona State Geologist who published many papers on Arizona minerals.

Mineral Data
What's on the rock

Malachite

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

Murdochite

Formula: 
PbCu6O8-x(Cl,Br)2x where x<=0.5
Strunz: 
3.DB.45
Crystal System: 
Isometric
Hardness: 
4.0
Colour: 
Black
Streak: 
Black
Type Locality: 
Mammoth-Saint Anthony Mine (Mammoth-St Anthony Mine; Mammoth Mine; St. Anthony Mine), St. Anthony deposit, Tiger, Mammoth District, Pinal Co., Arizona, USA

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Thank you for viewing my auctions. It goes without saying that maintaining high standards in both specimen quality and customer service are extremely important to me. If for any reason you are not happy with any aspect of your transaction then please let me know as soon as possible, ideally within 1 week of receiving your specimen. I will happily do all in my power to resolve the situation to your satisfaction. If your specimen is damaged upon delivery simply send me some photos to verify this and I'll provide you with a full refund or a replacement specimen, whichever you prefer. 

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