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Gold

Published on Mar 28, 2016

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PRESENTATION OUTLINE

GOLD

By: Kira Bruner

THE TOP 5 GOLD PRODUCERS

  • China
  • Australia
  • United States
  • Russia
  • South Africa

HOW IS IT MINED?

  • Placer Mining
  • Hard Rock Mining
  • By product Mining
  • Processing Gold Ore

Placer Mining- metal detecting, using gravity and water to separate dense gold from other materials.

Photo by Eric Leslie

Hard Rock Mining- open pit or underground mining tunnels.
By product- same kind of mining but gold is a secondary find and not the main goal

Processing gold ore- finely crushed rock or earth containing trace amounts of gold extracted in a chemical process.

People use gold as jewelry and as gold coins for money, currency.

Photo by epSos.de

The processing of gold ore acquires very little amounts of gold while the environmental impact and costs are high.

Gold is 75th in order of abundance of the elements but there is a point which it can be overworked.

Gold has been around for thousands of years, it was one of the first metals known to man.

The first money in the form of gold appeared about 700 BC

Photo by monkeyc.net

The "Gold of Troy" treasure hoard was excavated in turkey dating to 2450-2600 BC, showing delicate jewelry.