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hornblende schist

noun, Petrography
1.
a variety of schist containing needles of hornblende that lie in parallel planes.
Origin
1815-1825
1815-25
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples for hornblende schist
  • Unnamed quartzite-rich unit and amphibolite and hornblende schist unit mapped separately.

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