The formation mining and use of minerals
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The Formation, Mining, and use of minerals. Chapter 3 section 3. Environments in which minerals form. Evaporation Salt H 2 O Metamorphic rocks Volcanic activity Limestones groundwater Hot H2O solutions groundwater Pegmatites Volcanic activity Plutons Volcanic activity . Ore.

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Environments in which minerals form
Environments in which minerals form

  • Evaporation

    • Salt H2O

  • Metamorphic rocks

    • Volcanic activity

  • Limestones

    • groundwater

  • Hot H2O solutions

    • groundwater

  • Pegmatites

    • Volcanic activity

  • Plutons

    • Volcanic activity


The formation mining and use of minerals
Ore

  • A natural material whose concentration of economically valuable minerals is high enough for the material to be mined profitably

Platinum

Gold


2 types of mining
2 types of mining

  • Open pits- often use explosives to remove large deposits near the surface

  • Quarries- open pits that are used to mine building stone, crushed rock, sand, and gravel

  • Surface coal mining- also called “strip mining” coal is removed in large strips

  • Often requires passageways to be dug into the Earth to reach the ore.

  • If deposits are really deep, a vertical shaft is sunk which may connect interesting passageways.

Surface Mining

Subsurface Mining


Responsible mining
Responsible mining

  • The process of returning land to its original condition after mining it complete

  • Reusing and reducing our need for minerals by recycling many of the products we use such as aluminum

Reclamation

Recycling


Use of minerals
Use of Minerals

Metallic Minerals

  • Shiny surfaces-do not let light pass through- good conductors of heat and electricity. Can be pounded pressed and stretched without breaking.

  • Examples- gold, silver, copper

  • Uses- aircrafts and automobiles

  • Some nonmetallic minerals are highly valued for beauty and/or rarity over usefulness

  • Examples- diamonds, topez, ruby

  • Uses- jewelry

Nonmetallic Minerals

  • Shiny or dull surface- may let light pass through good- insulators of electricity

  • Examples- silica, gypsum

  • Uses- concrete, building materials, computer chips

Gemstones