diorite (n.) An igneous, crystalline in structure, consisting
essentially of a triclinic feldspar and hornblende. It includes part of
what was called greenstone.
Chambers DictionaryChamber's 20th Century Dictionary📕
diorite dī′o-rīt, n. a crystalline
granular igneous rock composed of feldspar and hornblende. [Gr.
diorizein, to distinguish—dia, through, horos,
a boundary.]
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