{"product_id":"mottramite-3","title":"MOTTRAMITE","description":"Mottramite is a lead vanadate hydroxide and at the Tsumeb mine in Namibia occurs in a bewildering variety of habits and colours.  Mottramite is typically some shade of green at Tsumeb and although this specimen is, it so dark a shade of green it appears jet black.  This large miniature or small cabinet specimen forms as a gently curved plate of stacked Mottramite crystals with an appearance more of Descloizite.  These two species do form a continuous solid solution series, the Descloizite-Mottramite Series, ranging from the pure lead-zinc Descloizite end member to lead-copper Mottramite.  Possibly this specimen lies within this series a little from the pure Mottramite end.","brand":"Crystal Classics","offers":[{"title":"Default Title","offer_id":57781010694479,"sku":"CC18895","price":370.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1011\/3748\/2063\/files\/CC18895_9c9cee39-976c-4194-92f4-0922bd3d1e02.jpg?v=1783975438","url":"https:\/\/crystalclassics.co.uk\/products\/mottramite-3","provider":"Crystal Classics UK","version":"1.0","type":"link"}