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rock forming mineral
20 minerals make up most of Earth's crust.
generally a light colored rock that has high silica content.
dark colored rock that has lower silica content.
particles of minerals or other rocks.
the look and feel of a rock's surface.
forms from the cooling of magma or lava.
forms when small particles of rock or plant and animal remains are squeezed together below the surface.
forms when a rock is changed by heat, pressure, or chemical reactions deep underground.