📑 Table of Contents▼
Close-up of granite, a phanerite rock, from Yosemite National Park in California, U.S.
Phaneritic diorite from Massachusetts

A phanerite[1] is an igneous rock whose microstructure is made up of crystals large enough to be distinguished with the unaided human eye. In contrast, the crystals in an aphanitic rock are too fine-grained to be identifiable. Phaneritic texture forms when magma deep underground in the plutonic environment cools slowly, giving the crystals time to grow.

Phanerites are often described as coarse-grained or macroscopically crystalline.

Examples

edit

See also

edit

References

edit
  1. ^ Monroe, James Stewart; Wicander, Reed; Hazlett, Richard W. (2007). "4". In Dodson, Keith (ed.). Physical Geology: Exploring the Earth. Earth Sciences (6 ed.). USA: Thompson Brooks/Cole. p. 115. ISBN 978-0495011484.
Stub icon

This article related to petrology is a stub. You can help Wikipedia by adding missing information.

📚 Artikel Terkait di Wikipedia

Porphyritic

remaining space simultaneously, limiting their size and shape. Pegmatite Phanerite Dietrich, R. and Skinner, B. (1979). Rocks and Rock Minerals. See p. 108

Pegmatite

intruded into Ediacaran schist, Cap de Creus peninsula, Catalonia, Spain Phanerite Aphanite Porphyritic Schwartz, G. (1928). "The Black Hills Mineral Region"

Porphyry (geology)

crystals and the much larger phenocrysts. Porphyries may be aphanites or phanerites, that is, the groundmass may have microscopic crystals as in basalt, or

Aphanite

component mineral crystals are not visible to the naked eye (in contrast to phanerites, in which the crystals are visible to the unaided eye). This geological