
Noah Webster
Trachyte
TRA'CHYTE, noun [Gr.rough.] A species of volcanic rock, composed of crystals of glassy feldspar, sometimes with crystals of hornblend, mica, iron pyrite, etc.
TRA'CHYTE, noun [Gr.rough.] A species of volcanic rock, composed of crystals of glassy feldspar, sometimes with crystals of hornblend, mica, iron pyrite, etc.