Supergene gold deposits formed by natural oxidation or a weathering. The most widespread mineral association formed by natural processes that occur in natural ores. Important factor as the process of weathering is the presence of transport by water but also climate is very important because it controls the availability of water. The most intense weathering in tropical climates where warmth and plentiful rainfall combine to create ideal conditions. Where rainfall is short of the hydrological cycle contributes to the salt from sea water, especially chlorides, but including some sulphate dissolved in meteoric water. Short-term hydrology will contribute more salt from the sea rather than created as a vapor. microscopic flakes of salt from sea water bubble explosion carried out remotely by onshore winds and eventually reach the soil surface. This mechanism is effective in short hydrological time in which humans are contributing to salt, nitrite and nitrate of alkali and alkaline soil.
Chemical weathering of primary minerals changes involve both existing and solute transport and redeposition. meteoric water is a key factor in the chemical process. Water is a chemical reagent in itself and fluid transport medium for a few rocks. The air dissolved in rainfall containing oxygen, nitrogen and carbon dioxide in the proportion of abnormal because of their differential solubility. Air is an important dispersion and transport agents. It also complements important reactants and complement base for generations of others. The proportion of oxygen in the air dissolved in the rainwater was higher than in normal atmosphere and in the presence of water vapor.
Gas phase also affects the occurrence of weathering and composed mostly of oxygen and nitrogen. Both are relatively inert, except in the presence of water vapor. tropical storm convert some oxygen to ozone and hydrogen peroxide, both strong reagents. Nitrate and nitrous oxide may also evolve. Some ozone is also formed by the action of the ultraviolet component of sunlight. A small amount of gas that develops in the biosphere and into the atmosphere. Hydrogen sulfide is produced in swamps and in shallow water continental shelf. Lateritic profiles of gas-phase permeate down to the level of permanent water and a little beyond the stuffy air in the water.
Chemical environment lateritization process lateritic gold deposit is characterized by washing and removal protore convert most of their constituents to metore. Basically, lateritization is a progressive process and no changes in active solvents and solutes remaining as the process of developing a profile of development. However, in consideration of supergene gold deposit, the critical reaction to take place in a zone depth of 100 m to 200 m.
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