{"product_id":"tennantite-5","title":"TENNANTITE","description":"Without doubt Tennantite, a copper arsenic sulfosalt, is pervasive and ubiquitous throughout the Tsumeb orebody but is, of course, much rarer as good, well developed crystals. This top-class specimen has several Tennantite crystals of tetrahedral habit attached to a shard of naturally etched milky-white Quartz. The tetrahedral crystals measure to 2.8 cm on edge and form sharp, mid-grey crystals with modified edges, of rough textural appearance and a semi-metallic lustre. Such crystals are thought to have formed within the ore matrix through processes of dissolution and recrystallisation, rather than in open cavities. A delightful Tennantite from the classic Tsumeb mine in Namibia.","brand":"Crystal Classics","offers":[{"title":"Default Title","offer_id":57780962132303,"sku":"CC15831","price":3331.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1011\/3748\/2063\/files\/CC15831.jpg?v=1783972210","url":"https:\/\/crystalclassics.co.uk\/products\/tennantite-5","provider":"Crystal Classics UK","version":"1.0","type":"link"}