{"product_id":"cobaltaustinite-on-calcite","title":"COBALTAUSTINITE   on CALCITE","description":"Cobaltaustinite is a rare secondary calcium cobalt arsenate hydroxide mineral that forms a series with the zinc analogue - Austinite. This specimen was previously labelled as Cobaltoan Austinite - a cobalt-rich variety of Austinite - but most material of this appearance from the Bou Azzer Mining District falls into the domain of Cobaltaustinite. It is a very rich, and large, display quality specimen, with crystal-lined cavities within Calcite coated with finely botryoidal crusts - some quite thick - of matt, leaf-green, to darker green Cobaltaustinite. At one end of the main cavity sparkling uncoated small prismatic Calcite crystal dominate with a fairly rapid transition across the cavity to Calcite crystals entirely covered with Cobaltaustinite. Ex Nick Hawes collection.","brand":"Crystal Classics","offers":[{"title":"Default Title","offer_id":57781390508367,"sku":"CC48768","price":1000.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1011\/3748\/2063\/files\/CC48768.jpg?v=1779761186","url":"https:\/\/crystalclassics.co.uk\/products\/cobaltaustinite-on-calcite","provider":"Crystal Classics UK","version":"1.0","type":"link"}