{"product_id":"ralstonite-with-thomsenolite","title":"RALSTONITE   with THOMSENOLITE","description":"The famous Ivigtut Cryolite Deposit is on the western coast of southern Greenland, a location set in stunning scenery of water, mountains and snow.  This fine small cabinet specimen displays an excellent coverage of both Thomsenolite and Ralstonite crystals, but before progressing any further, I must point out that Ralstonite is now renamed Hydrokenoralstonite.  Ivigtut is type locality for both species.  The Hydrokenoralstonite forms colourless octahedral crystals and the Thomsenolite, elongated steep-sided square pyramidal crystals with flat pinacoids and generally stained rusty brown with iron hydroxides.  Specimens from this long worked-out mine are becoming increasingly difficult to find, and this is a super example.  The Ivigtut Cryolite Deposit is located at Ivittuut (Ivigtut) on Arsuk Fjord, Sermersooq, Greenland.","brand":"Crystal Classics","offers":[{"title":"Default Title","offer_id":57781213659471,"sku":"CC28333","price":1850.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1011\/3748\/2063\/files\/CC28333_3b5e802a-2b02-4063-b920-e5bfefd194b1.jpg?v=1783981911","url":"https:\/\/crystalclassics.co.uk\/products\/ralstonite-with-thomsenolite","provider":"Crystal Classics UK","version":"1.0","type":"link"}