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eskolaite
Eskolaite is an uncommon chromium oxide mineral (chromium(III) oxide Cr2O3). ==Discovery and occurrence== It was first described in 1958 for an occurrence in the Outokumpu ore deposit of eastern Finland.〔 It occurs in chromium bearing tremolite skarns, metamorphosed quartzites and chlorite bearing veins in Finland; in glacial boulder clays in Ireland and in stream pebbles in the Merume River of Guyana.〔 It has also been recognized as a rare component in chondrite meteorites.〔 The mineral is named after the Finnish geologist Pentti Eskola (1883–1964).
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「eskolaite」の詳細全文を読む
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