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・ Lopadea River
・ Lopadium
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Loparite-(Ce)
・ Loparskaya
・ Lopary
・ Lopasnya River
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・ Lopata, Žužemberk
・ Lopatanj
・ Lopatcong Overlook, New Jersey
・ Lopatcong Township School District
・ Lopatcong Township, New Jersey
・ Lopate
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・ Lopatica (Macedonia)
・ Lopatica (Prilep)


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Loparite-(Ce) : ウィキペディア英語版
Loparite-(Ce)

Loparite-(Ce) is a granular, brittle oxide mineral of the perovskite class. It is black to dark grey and may appear grey to white in reflected light on polished thin section with reddish brown internal reflections.〔Loparite-(Ce) on (Webmineral )〕 It has the chemical formula of (Ce,Na,Ca)(Ti,Nb)O3.〔 Nioboloparite is a variation of Loparite-(Ce) containing niobium.〔
Loparite occurs as a primary phase in nepheline syenite intrusios and pegmatites. It is also found replacing perovskite in carbonatites.〔
Loparite was first described for an occurrence in the Khibiny and Lovozero massifs, Kola peninsula and northern Russia.

File:Loparite-crystal-structure-1.png |
File:Loparite-crystal-structure-2.png |
File:Loparite-crystal-structure-3.png |

==Etymology==
The term originates from the word ''Lopar'', the Russian name for the Sami indigenous inhabitants of the Kola peninsula, and the cerium content.〔〔〔Loparite-(Ce) on (Mindat.org )〕

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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