Question

The three main constituent minerals of granite stones are feldspar, mica, and quartz. The textures of different types of

granite stones are shown in the picture.
Based on the textures, it can be said that
A)
the proportion of mica in all the forms of granite is fixed.
B)
the proportion of quartz in all the forms of granite is fixed.
the three minerals vary in proportion in each form of granite.
D)
the three minerals are in the same proportion in each form of granite.

Answer 1

Option C

Step-by-step explanation:

Granite is composed of coarse-grained quartz and feldspars in varying proportions and due to the varying proportions of these two constituent materials, the texture of granite varies as shown in the image.

Thus, option C is correct

Options A and B and D are incorrect because the constituent material of granite is not fixed. It varies from from place to the other.