English Dictionary

leucocratic

adj

(geology, of igneous rock) Light in color, containing at least 90% felsic minerals.

The rock sample is leucocratic, indicating a high proportion of light-colored minerals.

意味（1）

(geology, of igneous rock) Light in color, containing at least 90% felsic minerals.

Occasionally the opinion is advanced that the formation of the leucocratic, granitic-granodioritic portions of the heterogeneous in-situ migmatites is due to a metasomatic process, i.e., to the addition of “emanations” from depth.