leucocratic

leucocratic

[loo-kuh-krat-ik]
adjective Geology.
(of a rock) composed mainly of light-colored minerals.

Origin:
leuco- + -crat + -ic

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leucocratic (ˌluːkəˈkrætɪk)
 
adj
(of igneous rocks) light-coloured because of a low content of ferromagnesian minerals
 
[C20: from German leukokrat, from leuco- + Greek kratein to rule]

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