Question

You are holding a coarse-grained crystalline rock with a texture that can be best described as having "interlocking crystals". the minerals present are feldspars, quartz, and mafic minerals. this rock can be classified as:

Answer 1

This rock can be classified as: an igneous rock.

Igneous rocks are made up of randomly arranged interlocking crystals and the important minerals that can be found in igneous rocks are feldspars, quartz, olivines, pyroxenes, amphiboles, and mafic minerals. All of these minerals are important in the formation of almost all igneous rocks, and they are basic to their classification.