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satin spar

American  

noun

Mineralogy.
  1. a fibrous variety of gypsum having a silky luster, used as a gem.


Etymology

Origin of satin spar

First recorded in 1795–1805


Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

The stalactites here are very beautiful, assuming the structure of satin spar.

From Cave Regions of the Ozarks and Black Hills by Luella Agnes Owen

It is an immense great fallen rock on whose dark surface are scattered transparent flake-like crystals of satin spar, resembling the congealed drops of a summer shower.

From Cave Regions of the Ozarks and Black Hills by Luella Agnes Owen

From here, for a long distance, the road was a hard, steep climb, over limestone in great variety—solid limestone, tufaceous stuff, concretionary coatings, satin spar, and calcite crystals.

From In Indian Mexico (1908) by Frederick Starr

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