| 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 rocksbytownite
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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