poikilitic

[poi-kuh-lit-ik]
adjective Petrography.
(of igneous rocks) having small crystals of one mineral scattered irregularly in larger crystals of another mineral.

Origin:
1830–40; < Greek poikíl(os) various + -ite1 + -ic

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Example sentences
In others, hornblende exhibits ophitic or poikilitic textures.
All contain large poikilitic feldspar, but otherwise they show distinct differences in overall appearance.
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