{"product_id":"tetrawickmanite-1","title":"TETRAWICKMANITE","description":"The famous Långban area in Sweden is one of the few places on Earth where the extremely rare manganese tin hydroxide species Tetrawickmanite has been recorded. After its discovery and description at the Foote Lithium Co. mine in North Carolina, USA, in 1971, it was spotted in material from Långban a few years later. This miniature specimen from Långban was acquired by the famous German systematics collector, Dr. Hans-Jurgen Wilke (1925-2014) in June 1983 from Ingemar Johanssen at Koppaberg. It should be noted that whatever mineral tack has been previously used has soaked into one side of this piece but perhaps this can be remedied as it does spread across the main area of tiny sulphur-yellow Tetrawickmanite crystals. These crystals are extremely small, but are scattered within tiny cavities and pore space within a dense pale clove-brown coloured host rock. Wilke mentions\"+ Bavenite?\" on this sample, but I cannot see anything that I would call Bavenite present, but the matrix fluoresces red under SW UV light which might excite Fluorescent species collectors. It comes with Wilke's detailed handwritten card index card.","brand":"Crystal Classics","offers":[{"title":"Default Title","offer_id":46792625160367,"sku":"CC43960","price":250.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0710\/8516\/2671\/files\/CC43960.png?v=1777386080","url":"https:\/\/crystalclassics.com\/products\/tetrawickmanite-1","provider":"Crystal Classics","version":"1.0","type":"link"}