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27 Cards in this Set
- Front
- Back
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definite chemical composition
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minerals that always contains certain elements in definite proportions
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inorganic
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not formed from living thing
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coal
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a natural resource that comes from the remains of plants and animals
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crystal
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the repeating pattern of a mineral's particles in a solid
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diamond
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hardest known mineral
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streak
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the color of a mineral's powder when rubbed against a piece of unglazed tile
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fracture
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when a mineral does not split evenly
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luster
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how a mineral reflects light from its surface; shiny minerals
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One of the ways a mineral forms deep inside Earth
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crystallization of melted materials
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vein
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a narrow channel or slab of a mineral that is different from the surrounding rock
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ore
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a rock that contains a metal or other economically useful mineral |
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prospector
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anyone who searches for an ore deposit
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gemstone
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rare, colorful mineral with a brilliant luster and a hardness of 8 or 9
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strip mining
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earth moving equipment scrapes away soil to expose ore
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open pit mining
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miners use earth moving equipment to dig a huge hole
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shaft mine
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a network of tunnels that extend deep into the ground, following the veins of ore
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a way to restore land damaged by strip mining
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grade the surface and replace the soil
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smelting
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process that removes the metal from the ore
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alloy
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a solid mixture of two or more metals
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solid
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definite shape and volume
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cleavage
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splitting of a mineral along flat surface
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metals
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can be stretched, hammered, or molded without breaking
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gems
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minerals used for jewelry and decoration
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element
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composed of a single kind of atom; examples: gold, lead, silver, aluminum
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crystallization
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process by which atoms are arranged to form a mineral with a crystal structure
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compounds
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when two or more elements combine
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characteristics of a mineral
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occurs naturally in Earth's crust, inorganic, solid, definite chemical composition, and a crystal structure
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