{"product_id":"allanite-ce-york-river-near-bancroft-ontario-canada","title":"Allanite-(Ce) — York River, Near Bancroft, Ontario, Canada","description":"\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eAllanite-(Ce). York River area, Bancroft, Hastings County, Ontario, Canada. Grenville Province.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eClassic Bancroft-district allanite-(Ce) from the York River area, one of the most prolific and historically collected mineral terrains in Canada. This specimen presents the characteristic black, resinous to pitchy masses of allanite-(Ce) typical of the region's pegmatitic and skarn-associated occurrences — dense, heavy, and often showing the slight alteration rind that forms on exposed surfaces over geological time as metamictization and oxidation slowly modify the outermost mineral.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eThe Bancroft area lies within the Central Metasedimentary Belt of the Grenville Province, a deeply eroded Proterozoic orogenic terrain where widespread carbonatite intrusion, pegmatite emplacement, and high-grade regional metamorphism combined to produce one of the world's most exceptional concentrations of rare mineral species. Allanite is a fixture of the local collector circuit and an important accessory mineral in many of the area's pegmatites, skarns, and calc-silicate gneisses — occurring in association with minerals such as titanite, apatite, zircon, fluorite, and the many uranium and rare earth species for which Bancroft is globally renowned.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eApprox. specimen size: 45mm x 25mm x 20mm\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eApprox. specimen weight: 43.48 grams\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eApprox. specimen activity on an SE International Ranger EXP: 610 CPM\u003c\/p\u003e","brand":"Rad Man Minerals","offers":[{"title":"Default Title","offer_id":54164805648668,"sku":null,"price":25.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0726\/5524\/1500\/files\/P5310018.jpg?v=1780264470","url":"https:\/\/radmanminerals.com\/products\/allanite-ce-york-river-near-bancroft-ontario-canada","provider":"Rad Man Minerals","version":"1.0","type":"link"}