Felsitic Texture

The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Felsitic Texture

 

a microcrystalline texture of the ground-mass of acid extrusive rocks. The groundmass of such rocks consists of minute crystalline formations, such as grains or fibers, and finely dispersed vitreous material. Felsitic texture is most frequently found in quartz porphyries.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
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