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English Dictionary - With Multi-Lingual Search
Your Query of 'adularia' Resulted in 1 Matches
Displaying Items 1 through 1
Definitions
adularia
noun
(
plural:
adularias
)
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).
Chemical composition: Potassium aluminum silicate, <math>KAlSi
?
_3O_8</math>
Physical properties:
Moh's Hardness: 6.0
Specific gravity: 2.6
Color: white, colorless
Luster: glassy
Fracture: conchoidal
Habit: prismatic.
Translations:
Spanish: adularia
Etymology:
:Named for the type locality at Adular, Switzerland.
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