RLAF+4.3

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Vocab

 * gemstone-** a hard, colorful mineral that has a brilliant or glassy luster
 * ore-** a rock that contains a metal or economically useful mineral
 * strip mines-** earthmoving equipment that scrapes away soil to expose ore
 * open pit mines-** using earthmoving equipment to dig a tremendous pit
 * shaft mines-** have network of tunnels that extend deep into the ground, following the veins of ore
 * smelting-** the process where an ore is melted to separate the useful metal from other elements the ore contains
 * alloy-** a solid mixture of two or more metals

Outline

 * The uses of Minerals**
 * many people use minerals
 * glass from a car window comes from minerals
 * minerals create metal and gemstones
 * minerals are used to make many products



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