microphyric

microphyric

[¦mī·krō¦fir·ik]
(petrology)
Of the texture of an igneous rock, containing microscopic phenocrysts (longest dimension 0.2 millimeter). Also known as microporphyritic.
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References in periodicals archive ?
Phonolites are typically microphyric to hypocrystalline with alkali feldspar phenocrysts or microphenocrysts ([Or.sub.43-83]), nepheline ([Ne.sub.67-79]), occasionally altered to cancrinite, acmitic clinopyroxene (acmite up to 63wt%), and ferroedenite-ferropargasite amphibole.