L1.4: Others

• Mineral Deposits

  ○ Natural concentration of minerals in the earth’s crust. These are aggregates of minerals and/or groups of minerals in an unusually high concentration.
• Ore Deposit

  ○ A mineral deposit that has high enough grades of metal that make it valuable to mine.

  ○ Ore: Naturally occurring minerals that contain a valuable constituent such as metal. It is surrounded by nonvaluable materials called gangue.
• Rock

  ○ A naturally occurring solid mixture of one or more minerals or organic matter.
• Gemstone

  ○ A hard colorful mineral with a brilliant or glassy luster. Usually very rare.