RHNC+4.3

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 * 4.3 mineral resources**

Vocabulary

 * gemstone-**hard colorful mineral that has a glassy luster.
 * ore-**A rock with metal
 * smelting**-melting ore to separate metal from rock
 * alloy-**A solid mixture of two or more metals.

The Uses of Minerals

 * Gemstones
 * Rubies, sapphires
 * gem
 * Metals
 * aluminum
 * iron
 * copper
 * silver
 * Other Useful Minerals
 * talc-talcum powder

Ores

 * metal and other elements

Prospecting

 * prospectors
 * searches for ore deposit

Mining

 * strip mines
 * moves soil out of way to show ore
 * open pit mines
 * earthmoving equipment to dig a big pit
 * ore deposits that start near surface
 * can be one kilometer wide and deep
 * shaft mines
 * underground tunnels
 * veins

Smelting

 * melts ore
 * separates melted metal from other elements
 * molten metal goes to bottom
 * slag
 * impurities+limestone=slag