Difference between revisions of "Phenocryst"
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A '''phenocryst''' is a relatively large [[crystal]] set into the [[groundmass]] of an [[igneous rock]] to give a [[porphyritic]] texture. | A '''phenocryst''' is a relatively large [[crystal]] set into the [[groundmass]] of an [[igneous rock]] to give a [[porphyritic]] texture. | ||
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==Sources== | ==Sources== | ||
*Pellant, Chris. ''The Complete Book of Rocks and Minerals'', Dorling Kindersley Inc.: New York (1995), ''p. 251'' | *Pellant, Chris. ''The Complete Book of Rocks and Minerals'', Dorling Kindersley Inc.: New York (1995), ''p. 251'' | ||
[[category:Mineralogy]] | [[category:Mineralogy]] | ||
Revision as of 02:09, August 3, 2008
A phenocryst is a relatively large crystal set into the groundmass of an igneous rock to give a porphyritic texture.
Sources
- Pellant, Chris. The Complete Book of Rocks and Minerals, Dorling Kindersley Inc.: New York (1995), p. 251