A block of milky-white vein Quartz coated with 2 to 3 mm clear glassy Quartz crystals, cuboctahedral Galena, and Tetrahedrite crystals to 1.3 cm hidden beneath a velvet-like coating of slightly iridescent brassy Chalcopyrite. A choice example of this combination of species from the Herodsfoot mine at Lanreath in Cornwall, England. Comes with three labels, one a green Barstow stock label.
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