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Key Terms 144-147

QuestionAnswer
Rock-forming mineral About 20 minerals that make up a majority of earths crust
Granite A light-colored rock that has high silica content
Basalt A dark-colored rock that is low in silica
Grains Particles of minerals or other rocks.
Texture A rocks feel
Igneous Rock Rock formed from cooling magma or lava
Sedimentary Rock Rock formed from particles of other rocks or the remains of plants and animals are pressed and cemented together it forms in layers
Metamorphic Rock Rock formed when an existing rock is changed by heat, pressure or chemical reactions
Created by: Surf Burger
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