Igneous Rocks and Associated Minerals
Click on the underlined links in the tables below to obtain more information about the igneous rock, texture or mineral, including some specimen pictures.
Igneous Rocks and Glasses
Textures associated with igneous rocks
aphanitic: very fine grained
glassy: texture of broken glass
phaneritic: mineral grains are coarse/large enough to be distinct
porphyritic: larger grains in a finer-grained matrix or ground mass
pyroclastic: "fire broken" or blasted from a volcano
scoriaceous: low-density rock with very large number of small gas-bubble voids
vesicular: with gas-bubble voids frozen in rock at time of crystallization
Minerals commonly associated with igneous rocks
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