rock forming minerals - About 20 minerals make up most of the rocks of Earth’s surface, Basalt - A dark-colored rock that has a lower silica content than Granite has, Granite - A light-colored rock that has high silica content, Igneous Rock - forms from the cooling of magma or lava, Sedimentary Rock - forms when small particles of rocks or the remains of plants and animals are pressed and cemented together, Metamorphic rock - forms when a rock is changed by heat or pressure, Texture - is the look and feel of a rock’s surface, Grains - Most rocks are made up of particles of minerals or other rocks,

Classifying rocks (7.2)

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