mesocratic


Also found in: Dictionary.

mesocratic

[‚mez·ə′krad·ik]
(petrology)
Of igneous rock, being intermediate in color between leucocratic and melanocratic due to equal amounts of light and dark constituents.
References in periodicals archive ?
Nepheline in a mesocratic syenite at Lac Rouge, Quebec (locality 76) is replaced by cancrinite and sodalite, which are subsequently altered to natrolite and thomsonite (Corriveau, 1984).