prehnite

[ prey-nahyt, pren-ahyt ]

noun

1. 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.

Word History and Origins

Origin of prehnite¹

First recorded in 1785–95; named after Colonel Van Prehn, 18th-century Dutchman who brought it from South Africa to Europe; -ite ¹

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