sedimentary
metamorphic
Ruby is a variety of the mineral corundum, and is not classified as sedimentary, igneous, or metamorphic in the manner of rocks.
igneous, sedimentary, metamorphic
Igneous
igneous
sedimentary
Igneous Rocks,Sedimentary Rocks,Metamorphic Rocks.
Metamorphic rocks can form from both igneous and sedimentary rocks
Metamorphic rocks can form from both igneous and sedimentary rocks
igneous is black and smooth metamorphic is magnetic and sedimentary is used as cement
The types of rocks are sedimentary, igneous, and metamorphic.
Sedimentary, igneous and metamorphic.