oligoclase
[ ol-i-goh-kleys ]
/ ˈɒl ɪ goʊˌkleɪs /
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noun Mineralogy.
a kind of plagioclase feldspar occurring commonly in white crystals, sometimes shaded with gray, green, or red.
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Words nearby oligoclase
oligemia, oligo-, oligoamnios, Oligocene, oligochaete, oligoclase, oligocystic, oligodactyly, oligodendria, oligodendrocyte, oligodendroglia
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British Dictionary definitions for oligoclase
oligoclase
/ (ˈɒlɪɡəʊˌkleɪs) /
noun
a white, bluish, or reddish-yellow feldspar mineral of the plagioclase series, consisting of aluminium silicates of sodium and calcium. Formula: NaAlSi 3 O 8 .CaAl 2 Si 2 O 8
Word Origin for oligoclase
C19: from oligo- + -clase
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
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Scientific definitions for oligoclase
oligoclase
[ ŏl′ĭ-gō-klās′, ō′lĭ- ]
A white to gray triclinic mineral of the plagioclase feldspar group. Oligoclase occurs in igneous rocks with a relatively high silica content, such as granite. Chemical formula: (Na,Ca)(Al,Si)AlSi2O8.
The American Heritage® Science Dictionary
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