{"product_id":"interesting-manganese-manganite-piece-mamatwan-mine-northern-cape-south-africa-76g-mf5284","title":"INTERESTING MANGANESE\/MANGANITE PIECE : MAMATWAN MINE, NORTHERN CAPE, SOUTH AFRICA 76g. MF5284","description":"\u003cp\u003eSPECIMEN : ORIGINALLY INDEXED AS NATIVE MANGANESE [SEE NOTE BELOW]\u003c\/p\u003e\n\u003cp\u003eWEIGHT : 76g\u003c\/p\u003e\n\u003cp\u003eSIZE : 30 x 30 x 10mm\u003c\/p\u003e\n\u003cp\u003ePROVENANCE : MAMATWAN MINE, KALAHARI, NORTHERN PROVINCE, SOUTH AFRICA\u003c\/p\u003e\n\u003cp\u003eWITH MINERAL COLLECTION IDENTIFICATION DOCKET MF5284\u003c\/p\u003e\n\u003cp\u003eNOTE : UNDERSTANDINGLY \"NATIVE MANGANESE\" IS NOT RECOGNISED WITHIN ANY OFFICIAL MINERAL CLASSIFICATION. WHAT WE HAVE HERE IS AN UNUSUALLY DENSE MANGANESE BASED SPECIMEN - S.G. FAR HIGHER THAN THAT OF MANGANITE.\u003c\/p\u003e\n\u003cp\u003eOTHER HEAVY MINERAL CONTENT EVIDENT WITH THE SPECIMEN.\u003c\/p\u003e","brand":"MF Minerals \u0026 Rocks","offers":[{"title":"Default Title","offer_id":57359274312060,"sku":null,"price":32.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0813\/5996\/2425\/files\/IMG_1181_56a2d8af-0f80-46b5-8762-7fcf39562799.jpg?v=1787824004","url":"https:\/\/mfmineralsrocks.com\/fr\/products\/interesting-manganese-manganite-piece-mamatwan-mine-northern-cape-south-africa-76g-mf5284","provider":"MF Minerals \u0026 Rocks","version":"1.0","type":"link"}