{"product_id":"johannsenite-3","title":"Johannsenite","description":"\u003cp\u003eJohannsenite Mineral From Iron Cap Mine Aravaipa District Graham Co Arizona USA\u003c\/p\u003e\n\u003cp\u003eSize-\u003cbr\u003e5cm x 4.8cm x 3cm\u003c\/p\u003e\n\u003cp\u003eWeight-\u003cbr\u003e57g\u003c\/p\u003e\n\u003cp\u003eYou will receive the item in the photo\u003c\/p\u003e\n\u003cp\u003eJohannsenite is a calcium-manganese silicate.\u003cbr\u003eCrystal system-monoclinic \u003cbr\u003eHabit-it typically forms elongated prismatic crystals,column like aggregates,radiating fibrous masses,or granular clusters.\u003cbr\u003eMineral class- Silicate\u003cbr\u003eRock formation- Johannsenite is a classic metamorphic mineral that forms under specific geochemical conditions. \u003cbr\u003ePrimary environment- it occurs predominantly in manganiferous contact metamorphic zones and skarn deposits. Skarns form when hot,chemically aggressive magmatic fluids intrude in carbonate rocks (like limestone or dolostone)\u003cbr\u003eIf surrounding carbonate rocks or invading fluids are rich in manganese and calcium,Johannsenite forms along contact boundary.\u003c\/p\u003e","brand":"Crystal and fossils","offers":[{"title":"Default Title","offer_id":62510970470787,"sku":null,"price":16.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0563\/2524\/3040\/files\/IMG-0981_e84abf98-5bbc-4a38-8968-2d717e6f5aa3.heic?v=1788282611","url":"https:\/\/crystalandfossils.co.uk\/products\/johannsenite-3","provider":"Crystal and fossils","version":"1.0","type":"link"}