pegmatite
English Thesaurus
1. a form of igneous rock consisting of extremely coarse granite resulting from the crystallization of magma rich in rare elements (noun.substance)
| hypernym | : | igneous rock, |
| definition | : | rock formed by the solidification of molten magma (noun.substance) |
| substance holonym | : | samarskite, |
| definition | : | a complex black mineral occurring in pegmatites (noun.substance) |
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