{"product_id":"calcite-on-dolomite-cast-9","title":"CALCITE on DOLOMITE cast","description":"This fascinating Calcite and Dolomite specimen from Tsumeb mine offers a challenge to work out how many different generations of carbonate mineralization have formed and their order. Forming an elongated, cabinet-sized triangular display plate, it is clear that both sides are encrusted with Calcite crystals, but both with very different habits and appearance: one finely crystallized, colourless and glassy; the other opaque, creamy-white sharp bladed shallow-angled rhombs. Inbetween the two forms of Calcite is a thin layer of crystallized greyish-white Dolomite with a pinkish-brown core, but this is a cast, or epimorphous after earlier still Calcite that has dissolved away. If that is not complex enough, then another generation of Calcite, as glassy, cream-coloured crystals sit upon the opaque bladed Calcite crystals. Ex Weyand Collection.","brand":"Crystal Classics","offers":[{"title":"Default Title","offer_id":47430885703855,"sku":"CC52692","price":600.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0710\/8516\/2671\/files\/CC52692.png?v=1788270705","url":"https:\/\/crystalclassics.com\/products\/calcite-on-dolomite-cast-9","provider":"Crystal Classics","version":"1.0","type":"link"}