Английская Википедия:Florencite-(Sm)

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Шаблон:Short description Шаблон:Infobox mineral Florencite-(Sm) is a very rare mineral of the plumbogummite group (alunite supergroup) with simplified formula SmAl3(PO4)2(OH)6.[1] Samarium in florencite-(Sm) is substituted by other rare earth elements, mostly neodymium. It does not form separate crystals, but is found as zones in florencite-(Ce),[2] which is cerium-dominant member of the plumbogummite group.[3] Florencite-(Sm) is also a samarium-analogue of florencite-(La) (lanthanum-dominant) and waylandite (bismuth-dominant), both being aluminium-rich minerals.[1]

Occurrence and association

Florencite-(Sm) was revealed in quartz veins in the Maldynyrd Range, Subpolar Urals, Russia. It associates with xenotime-(Y).[2]

Notes on chemistry

Florencite-(Sm) has admixtures of neodymium, and small amounts of cerium, gadolinium, sulfur, strontium, praseodymium, calcium, lanthanum, europium, and silicon.[2]

References

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Шаблон:Mineral-stub

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  2. 2,0 2,1 2,2 Ошибка цитирования Неверный тег <ref>; для сносок GOD не указан текст
  3. Шаблон:Cite webl