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Minerals and Rocks

lessons 1-3

WordDefinition
Mineral A naturally occurring solid that can form by inorganic processes and that has a crystal structure and a definite chemical composition.
Inorganic Not formed from living things or the remains of living things.
Crystal a solid in which atoms are arranged in a pattern that repeats again and again
Streak the color of a minerals powder
Luster the way light reflects off of a minerals surface
Moh's Hardness Scale a scale ranking ten minerals from softest to hardest ;used in testing the hardness of minerals
Cleavage a minerals ability to split easily along a flat surface
Fracture the way a mineral look when it breaks in an irregular way
Geode a hollow rock inside which mineral crystals have grown
Crystallization the process by which atoms are arranged to form a material with a crystal structure
Solution A MIXTURE CONTAINING A SOLVENT and at least one solute that has the same properties throughout: a mixture in which one substance is dissolved in another
Vein a narrow deposit of a mineral that is different than the surrounding rock
Rock-Forming Mineral any of the common minerals that make up most of earths crust
Granite a usually light colored igneous rock that is found in continental crust
Basalt a dark dense igneous rock with a fine texture found in oceanic crust
Grain the particles of minerals or other rock that give a rock its texture
Texture the look and feel of a rocks surface determined by the size shape and pattern of a rocks grains
Igneous Rock a type of rock that forms from the cooling of molten rock at or below the surface
Sedimentary Rock a type of rock that forms from other rock plant or fossil particles that are pressed and cemented together
Metamorphic Rock a type of rock formed by an existing rock that is changed by heat pressure or chemical reactions
Extrusive Rock igneous rock that forms from lava on earths surface
Intrusive Rock rock that forms from magma beneath earths surface
Created by: abelan001
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