LPKW+4.3

toc

=4.3 Mineral Resources=

Vocabulary

 * gemstone**-a hard colorful mineral that has a glassy luster
 * smelting**-the process of separating useful metal from other minerals
 * alloy**-a mixture of 2 or more metals
 * ore**-a rock that contains a usful mineral
 * alloy**-a solid mixture of two or more metals

Outline

 * 4.3 mineral resouces**
 * The use of minerals
 * minerals can be used for many reasons
 * gemstones
 * gemstones are hard, colorful mineral that has a glassy luster
 * Metals
 * metals are usful for many products
 * metal can be melted, stretched, and molded
 * Other useful minerals
 * There are much more minerals than just gemstones and metals like quartz
 * Ores
 * many minerals are in another mineral
 * copper is mostly found in chalcopyrite
 * useful minerals must be separated from their ores
 * Prospecting
 * you must prospect for a deposit of minerals
 * Mining
 * There three types of mines, strip mines, open pit mines, and shaft mines
 * strip mines make a scar on the surface of the earth
 * open pit mines start from the top and then decends lower and lower
 * shaft mining is getting ores deep in the ground without penetrating the surface
 * some types of mining can damage the land
 * smelting
 * smelting removes the ore from the target mineral