gold panning
Tuesday, December 7, 2010
What Is A Lipoma On Forehead
The gold fever. French Guiana, is a South American territories, concealing gold.
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Some companies to exploit this metal legally, but many sites are illegal gold mining.
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Research and illegal sale of the metal, also generated serious social conflict.
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In Guyana, the gold may have several causes:
The primary gold comes directly from the bedrock, then it is concentrated in auriferous quartz veins, it be extracted by digging soil.
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Gold alluvial sediments derived from erosion of the rock originally containing gold which is then concentrated in river beds form of nuggets and flakes.
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Many minerals are present in French Guiana: Gold, Molybdenum, Lithium, Uranium, Diamond, Bauxite ... but only the holding of gold is profitable.
If the exploitation of alluvial deposits (gold mining area and rivers) is most prevalent among small miners, often illegal.
Large multinational companies prefer the use of deep deposits, much richer, but require significant investment.
This extract tons of stones which are then crushed and processed to get the gold dust.
The most common is the technique of pan: put sand, often taken from a small river, in a conical container very open (as a Chinese hat), called a pan.
. was added water and the container is rotated in all directions: the water exits the vessel, carrying the lighter sand. The heavier sand and gold remains at the bottom of the cone.
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This work is exceedingly painful: the legs in the river water all day, bent over the pan, bitten by mosquitoes and flies, stir several cubic meters sand few grams of gold.
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A second technique is widespread: the Long Tom: These are wooden boxes with no lid at the bottom of which are small wooden brackets 3 cm in height, arranged crosswise, holding the heavy elements, as in the technique of panning.
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Mercury is then used to separate gold from sand residue. Gold-mercury separation is then performed by heating.
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Guyana Gold Panning
illegal gold seekers, mainly from disadvantaged areas of
Brazil or Suriname the "garimpeiros "operate underground, with all the ensuing problems. Saccage a unique tropical forest in the world, the less fragmented the surface. . mercury miners, produced used to agglomerate gold particles contaminate the Amerindian populations, and a climate of violence like the Wild West growing since the 1990s, including Brazilians and miners themselves are victims.
Photo of gold mining in Guyana
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