{"product_id":"large-twinned-uraninite-crystals-cardiff-uranium-mine-near-bancroft-ontario","title":"Large Twinned Uraninite Crystals - Cardiff Uranium Mine, near Bancroft, Ontario","description":"\u003cp dir=\"ltr\"\u003eA specimen of large uraninite crystals from the Cardiff Uranium Mine, one of the better-known producers in the Bancroft district. The standout is a larger twinned crystal, a distinctive feature in a species that most often turns up as simple octahedra or cubes. The crystals show the deep black color and bright submetallic luster that define uraninite, and their size is a clear step up from the small grains and crusts more typical of the region.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eTwinning in uraninite is an uncommon and sought-after habit, and a twin of this scale makes the piece far more interesting than a standard crystal specimen. Cardiff was part of Ontario’s mid-century uranium boom, and the mine’s pegmatitic ore produced well-formed uraninite that continues to draw collectors of Canadian radioactive minerals. Like the other historic Bancroft-area mines, it is long out of production, and large crystals with firm locality data are increasingly hard to find.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eA standout piece for a Canadian uranium collection, a crystal habit suite, or a display of classic Bancroft-area localities.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eApprox. specimen size:\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eApprox. specimen weight:\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eApprox. specimen activity on an SE International Ranger EXP: 83 000 CPM\u003c\/p\u003e","brand":"Rad Man Minerals","offers":[{"title":"Default Title","offer_id":54729144500508,"sku":null,"price":400.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0726\/5524\/1500\/files\/PA180220.jpg?v=1792332488","url":"https:\/\/radmanminerals.com\/products\/large-twinned-uraninite-crystals-cardiff-uranium-mine-near-bancroft-ontario","provider":"Rad Man Minerals","version":"1.0","type":"link"}