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Concept information

Preferred term

phenocryst  

Type

  • http://www.irandoc.ac.ir/onto/irandoc-meta/Concept

Broader concept

Definitions

  • A phenocryst is a relatively large and usually conspicuous crystal distinctly larger than the grains of the rock groundmass of a porphyritic igneous rock. Phenocrysts often have euhedral forms either due to early growth within a magma or by post-emplacement recrystallization. [Wikipedia]

Obsolete

  • false

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URI

http://www.irandoc.acir/onto/irandoc/SWEETT08556

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