Pharmacosiderite

$250.00

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Pharmacosiderite, a hydrated basic ferric arsenate, forms splendidly coloured deep lush leaf green cubic crystals lining a shallow open vug in a limonitic gossan matrix. The crystals average 1 to 1.5 mm on edge and are intergrown each other and partly surrounded with drusy tan and jet-black micro-crystalline unidentified species. A great miniature Pharmacosiderite from Wheal Gorland.