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单词 bytownite
释义

bytownite


by·tow·nite

B5609100 (bī-tou′nīt)n. A blue to dark-gray variety of plagioclase feldspar that contains a higher proportion of calcium than sodium and occurs in alkaline igneous rocks.
[After Bytown, former name of Ottawa, Ontario, near where a sample of the mineral was found.]

bytownite

(ˈbaɪˌtaʊnaɪt) na rare plagioclase found in alkaline igneous rocks

bytownite


bytownite

[′bī·tau̇‚nīt] (mineralogy) A plagioclase feldspar with a composition ranging from Ab30 An70 to Ab10 An90, where Ab = NaAlSi3O8 and An = CaAl2Si2O8; occurs in basic and ultrabasic igneous rock.
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更新时间:2025/1/30 16:07:07