jcjc4.3

Vocabulary
Gemstone: A hard colourful mineral with a glassy luster. Ore: A rock that contains a metal economicly useful mineral. Alloy: A solid mix of two or more minerals.

outline

 * The uses of minerals


 * Gemstones


 * Metals


 * other useful minerals


 * Ores


 * Prospecting


 * Mining


 * Smelting