mimophyre
/ˈmʌɪməfʌɪə/Geology rare
noun
A type of uncrystallized rock with coarse grains of feldspar, resembling a porphyry.
Origin
Early 19th century; earliest use found in Henry Thomas De la Beche (1796–1855), geologist. From French mimophyre from Hellenistic Greek μιμο- + French -phyre (in porphyre).