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ch.3 key terms
18 key terms
Question | Answer |
---|---|
a naturally occurring, inorganic solid thta has a crystal structure and a definite chemical composition | mineral |
not formed form living things or the remains of living things | inorganic |
a solid in which the atoms are arranged in a pattern that repeats again and again | crystal |
the color of a minerals powder | streak |
the way a mineral reflects light from its surface | luster |
a scale ranking ten minerals from softness to hardness: used in testing the hardness of minerals | Mohs Hardness Scale |
a minerals ability to split easily along flat surfaces | cleavage |
the way a mineral looks when it breaks apat in an irregular way | fracture |
a hollow rock inside which mineral crystals have formed | geode |
the process by which atoms are arranged to form a material with a crystal structure | crystallization |
the molten mixtrue of rock forming substances, gasses , and water from the mantle | magma |
liquid magma that reaches the surface:also, tthe rock formed when liquid lava hardens | lava |
a mixture in which one substance is disolved in another | solution |
a narrow deposit of a mineral that is sharply different form the surrounding rock | vein |
a hard colorful mineral has a brilliant or glassy luster and is valued for its apperance | gemstone |
rock that contains a metal or economically useful mineral | ore |
the process by which ore is melted to seperate the useful meatal from other elements | smelting |
a sloid mixture of two or more elements , at least one of which is metal | alloy |