{"product_id":"thorite-var-thorogummite-on-ferrian-annite-suishoyama-pegmatite-iizaka-village-fukushima-prefecture-japan","title":"Thorite var. Thorogummite on Ferrian Annite — Suishoyama Pegmatite, Iizaka Village, Fukushima Prefecture, Japan","description":"\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"ltr\"\u003eA well-documented specimen of thorite (variety thorogummite) from one of Japan's most mineralogically significant pegmatites. The Suishoyama pegmatite — a vertical, pipe-shaped intrusion roughly 60 meters in diameter near Iizaka Village, Kawamata, in Fukushima Prefecture — was originally worked commercially for feldspar and quartz for the ceramic industry, but is far better known among mineralogists as an unusually yttrium-rich locality: it's the type locality for both iwashiroite-(Y) and, more recently, miyawakiite-(Y), and has produced a notably diverse rare-earth and thorium mineral suite.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"ltr\"\u003eThis specimen shows yellow-brown thorogummite crystals — a hydrous, thorium-dominant member of the thorite group — hosted in ferrian annite, an iron-rich mica. Thorogummite forms through the partial hydration and alteration of primary thorite, and its presence here reflects the broader thorium- and REE-enriched character of the Suishoyama dike.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"ltr\"\u003eThe specimen carries original, dated collection documentation and comes from the \u003cstrong\u003eEric L. Quinter Collection\u003c\/strong\u003e — Quinter's specimens are widely circulated among serious thorium\/uranium mineral collectors and carry an established reputation for accurate, well-researched locality data.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"ltr\"\u003eApprox. specimen size: 45mm x 20mm x 5mm\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"ltr\"\u003eApprox. specimen weight: 7.80g\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"ltr\"\u003eApprox specimen activity on an SE International Ranger EXP: 4000 CPM\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"ltr\"\u003e\u003cstrong\u003eSpecies:\u003c\/strong\u003e Thorite, var. Thorogummite, on Ferrian Annite\u003cbr\u003e\u003cstrong\u003eLocality:\u003c\/strong\u003e Suishoyama pegmatite, Iizaka Village, Kawamata, Date District, Fukushima Prefecture, Japan\u003cbr\u003e\u003cstrong\u003eProvenance:\u003c\/strong\u003e Ex. Eric L. Quinter Collection (No. 1112, U\/Th 1084)\u003cbr\u003e\u003cstrong\u003eRadioactivity:\u003c\/strong\u003e Present — handle and store per standard radioactive mineral practice\u003c\/p\u003e","brand":"Rad Man Minerals","offers":[{"title":"Default Title","offer_id":54341594251548,"sku":null,"price":450.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0726\/5524\/1500\/files\/P7230284.jpg?v=1784843666","url":"https:\/\/radmanminerals.com\/products\/thorite-var-thorogummite-on-ferrian-annite-suishoyama-pegmatite-iizaka-village-fukushima-prefecture-japan","provider":"Rad Man Minerals","version":"1.0","type":"link"}