Ferrokesterite (rare - Type Locality) & Arsenopyrite (Barnes & Matioli Coll.)

Cligga Head Mine, Perranzabuloe, St Agnes Dist., Cornwall, England
Thumbnail, 2.8 x 2.4 x 1.3 cm
Start Time: 02/27/2016 6:30:00 pm (CST)
End Time: 03/03/2016 6:30:00 pm (CST)
Auction Closed
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Item Description

Ferrokesterite is a rare copper sulfosalt, the iron analogue of kesterite. This old Cornwall mine is the Type Locality. A few ferrokesterite blebs with the dark blue-violet tarnish are noted on both sides of the slab of metallic, bladed arsenopyrite. Rare and excellent combination material from the Alan Barnes and Matioli Collections.

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