KZIBG+4.3

toc =4.3 Mineral Resources=

Vocabulary

 * gemstone**- a hard multicolored mineral that has a shiny/glassy luster.
 * smelting**- a process of which an ore is melting to take out the useful metals from the other elements.
 * alloy**- a solid mixture of two or more metals.

The Uses of Minerals

 * people that live today still use minerals
 * the metal body and window glass come from minerals around us
 * Gemstones
 * Beautiful gemstones like rubies and sapphires are all minerals.
 * usually has a shiny glassy luster.
 * Can be used as mechanical parts and for grinding/polishing.
 * Metals
 * Some minerals are metals
 * like aluminum, iron, copper, and silver.
 * handy because metal is flexible and can be bent
 * can be the metal filament in a light bulb, or steel girders that frame office buildings
 * Other Useful Minerals
 * Many other uses
 * minerals in foods, medicines and fertilizers

Ores

 * contain metal
 * metal doesn't come in pure form
 * usually combination with other rocks
 * with mineral chalcopyrite