prehnite

American  

[prey-nahyt, pren-ahyt] / ˈpreɪ naɪt, ˈprɛn aɪt /

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.

---

Etymology

Origin of prehnite

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

Example Sentences

In some exceptional cases, e.g. axinite, prehnite, &c., there is no apparent relation between the distribution of the pyro-electric charges and the symmetry of the crystals.

From Encyclopaedia Britannica, 11th Edition, Volume 7, Slice 7 "Crocoite" to "Cuba" by Various

We also found some large tabular fragments, evidently portions of a vein consisting of prehnite, associated with calcareous spar, and native copper.

From A Journey from Prince of Wales's Fort in Hudson's Bay to the Northern Ocean in the Years 1769, 1770, 1771, 1772 New Edition with Introduction, Notes, and Illustrations by Tyrrell, J. B.

Tabular fragments of prehnite, associated with calc-spar and native copper, were also picked up, evidently portions of a vein, but we did not discover the vein in its original repository.

From Narrative of a Second Expedition to the Shores of the Polar Sea by Franklin, John

The copper is also accompanied by epidote, calcite, prehnite, analcite and other zeolitic minerals.

From Encyclopaedia Britannica, 11th Edition, Volume 7, Slice 3 "Convention" to "Copyright" by Various

The best specimens are afforded by the beautifully developed transparent glassy crystals, found with albite, prehnite and quartz, in a zone of amphibolite and chlorite-schists at Le Bourg d'Oisans in Dauphin�.

From Encyclopaedia Britannica, 11th Edition, Volume 3, Part 1, Slice 1 "Austria, Lower" to "Bacon" by Various