How do you physically describe a sedimentary rock, a igneous rock and a metamorphic rock?

Sedimentary rocks: sandstone-red/gray, limestone- white-gray. Metamorphic rocks: gneiss-pink/gray, marble-light colored. Igneous rocks: granite-pink/gray.
Answered by kgb agent Jenny C on Tuesday, May 08 2012 at 07:10PM EDT