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prehnite
[ prey-nahyt, pren-ahyt ]
noun
- a mineral, hydrous calcium aluminum silicate, Ca 2 Al 2 Si 3 O 1 0 (OH) 2 , occurring in light-green reniform aggregates or tabular crystals.
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Example Sentences
Also, in detached fragments, on the south shore of Lake Superior, intimately mixed with prehnite.
From Project Gutenberg
Prehnite, pren′īt, n. a hydrous silicate of alumina and lime, usually of a pale-green colour.
From Project Gutenberg
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