| Subject |
has color index |
has texture |
has grain size |
has definition |
has composition |
has shade |
has solidification mechanism |
has solidification timescale |
is a kind of |
|---|
| allotriomorphic rock | | approximately equant anhedral grains | | a rock with texture characterized by approximately equant anhedral grains | silicates (with very few exceptions) | | | | igneous rock |
| hyperleucocratic rock | 10 or less | | | very light colored rock with color index of 10 or less | silicates (with very few exceptions) | very light | | | igneous rock |
| phaneretic rock | | | discernable without a microscope | a rock whose grains can be discerned without the aid of a microscope | | | | | rock |
| quartz-alkali feldspar | | | | | silicates (with very few exceptions) | | cooling in deep underground chambers | very slow | plutonic rock |
| aplite | 10 or less | approximately equant anhedral grains | discernable without a microscope | a very light colored, medium to fine grained, allotriomorphic-granular, quartz-alkali feldspar | silicates (with very few exceptions) | very light | | | allotriomorphic rock |
Meteorites View all facts Glossary Help
