- a type of dark igneous rock embedded with feldspar crystals, related to basalt.
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Examples from the Web for melaphyre
In China, at the close of the period, there were enormous eruptions of melaphyre, porphyrite and quartz-porphyry.
Melaphyre is a name given to the very dark varieties of altered augitic lavas, rich in magnetite and chlorite.
The rocks consist chiefly of basalt, dolerite, melaphyre and felstone.
- geology obsolete a type of weathered amygdaloidal basalt or andesite
C19: via French from Greek melas black + (por) phura purple
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