hornblende schist

American  

noun

Petrography.

1. a variety of schist containing needles of hornblende that lie in parallel planes.

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Etymology

Origin of hornblende schist

First recorded in 1815–25

Example Sentences

Of hornblende schist; these are elongate and intended to be used with both hands. 12-13.

From Illustrated Catalogue of the Collections Obtained from the Indians of New Mexico in 1880 Second Annual Report of the Bureau of Ethnology to the Secretary of the Smithsonian Institution, 1880-81, Government Printing Office, Washington, 1883, pages 429-466 by Stevenson, James

He had some very fine teacups of agate and hornblende schist with finely chased silver covers, which I admired very much.

From Mount Everest the Reconnaissance, 1921 by Howard-Bury, Charles Kenneth

On the road to Catia we see the chloritic schist passing into hornblende schist.

From Personal Narrative of Travels to the Equinoctial Regions of America, During the Year 1799-1804 — Volume 1 by Ross, Thomasina

If hornblende is the most abundant mineral, the same scaly structure shows in a dark rock called hornblende schist, rich in iron.

From Earth and Sky Every Child Should Know Easy studies of the earth and the stars for any time and place by Rogers, Julia Ellen