There are three rock types; igneous, sedimentary and metamorphic rocks. I have a list of rocks, can you please tell me what type of rocks they are? These are the rocks: Sandstone, Granite, Marble, Basalt, Chalk, Slate.
Granite and basalt are igneous rocks. Sandstone and chalk are sedimentary rocks. Marble and slate are metamorphic rock types.
Instruction: There are three rock types; igneous, sedimentary and metamorphic rocks. I have a list of rocks, can you please tell me what type of rocks they are? These are the rocks: Sandstone, Granite, Marble, Basalt, Chalk, Slate.
Context: 
Response: Granite and basalt are igneous rocks. Sandstone and chalk are sedimentary rocks. Marble and slate are metamorphic rock types.