CJKN+4.3

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Vocabulary:
gemstone:a hard, colorful mineral that has a brilliant or glassy luster ore: rock that contains a metal or economically useful mineral smelting:the process of which the ore is melted to separate the useful from non-useful elements alloy:a solid mixture of two or more metals

Outline

 * uses of minerals
 * gemstones
 * metals
 * other useful minerals
 * food
 * ores
 * mineral in rock
 * prospecting
 * study surrounding features
 * mining
 * strip mines
 * open pit mines
 * shaft mines
 * smelting
 * separates ores