- a basaltic rock consisting essentially of pyroxene and plagioclase with nepheline or leucite.
Origin of tephrite
1875–80; < Greek tephr(ós) ash-colored + -ite1
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Examples from the Web for tephrite
Teph′ritoid, a variety of tephrite; Tephi′roite, a reddish silicate of manganese.
Tephrite, tef′rīt, n. a name applied to certain modern volcanic rocks.
- a variety of basalt containing plagioclase, augite, and a feldspathoid, commonly nepheline, or leucite
C17: from Greek tephros, from tephra ashes; see -ite 1
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012