In geology, what are the main classification for rocks?
There are three general classes of rocks: Igneous, Sedimentary, and Metamorphic.
<START_INST>In geology, what are the main classification for rocks?<END_INST><START_CTX><END_CTX><START_A>There are three general classes of rocks: Igneous, Sedimentary, and Metamorphic.<END_A>