Adularia Definition

ăjə-lârē-ə, -lăr-
noun
A colorless to milky white mineral of the potassium feldspar group that forms from relatively low-temperature magmas and lacks structural homogeneity.
American Heritage
A transparent or translucent variety of orthoclase.
Webster's New World

A variety of orthoclase feldspar found as colorless to white prismatic crystals in cavities in metamorphic rocks. Some specimens reflect a bluish sheen along crystal faces. This phenomenon is called adularescence, and adularia with this property is called moonstone. (See sanidine).

Wiktionary
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Other Word Forms of Adularia

Noun

Singular:
adularia
Plural:
adularias

Origin of Adularia

  • Italian from French adulaire after Adula , a mountain group of southeast Switzerland

    From American Heritage Dictionary of the English Language, 5th Edition

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