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adularia
[ aj-uh-lair-ee-uh ]
noun
, Mineralogy.
- a sometimes opalescent variety of orthoclase formed at a low temperature.
adularia
/ ˌædjʊˈlɛərɪə /
noun
- a white or colourless glassy variety of orthoclase in the form of prismatic crystals. It occurs in metamorphic rocks and is a minor gemstone. Formula: KAlSi 3 O 8
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Word History and Origins
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Word History and Origins
Origin of adularia1
C18: via Italian from French adulaire, after Adula, a group of mountains in Switzerland
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