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they classify the rocks by their texture and compisition
PIE
Geologists classify metamorphic rocks by the arrangements of the grains that make up the rocks.
All rocks are classfied as 1 of the following:Sedmintary Igneous and Metamorphic
by carol and size
Igneous rocks.Sedimentary rocks.Metamorphic rocks.
Geologists classify rocks by looking at their chemical and mineralogical composition then at the the size and shape of their component minerals then at any texture, pattern or grain that the rocks may display. They also classify them in relation to how they were formed.
It depends
they look through a microscope
Color and texture is one way to classify igneous rocks. Another way to do this is modal classification and normative classification.
Geologists classify rocks by where they are formed; above ground or under ground
yes,either felsic if light coloured or mafic if dark cloured.we classify rocks like that especially igneous rocks but COLOR IS NEVER USED TO IDENTIFY ANY ROCK.only classification.