a variety of schist containing needles of hornblende that lie in parallel planes.
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How to use hornblende schist in a sentence
About Losito we found the trap had given place to hornblende schist, mica schist, and various schorly rocks.Missionary Travels and Researches in South Africa | David Livingstone
hornblende schist is common over large areas in the Lake Superior region.The Elements of Geology | William Harmon Norton
He had some very fine teacups of agate and hornblende schist with finely chased silver covers, which I admired very much.Mount Everest the Reconnaissance, 1921 | Charles Kenneth Howard-Bury
The term is to some extent synonymous with “amphibolite” and “hornblende-schist.”
Many outcrops of similar rocks have been traced in the northern zones of the Alps, often with serpentine and hornblende-schist.