Eluvial Gold Deposit Types

Visible images of rock outcrops and gravel from eluvial deposits carried by water from rainfall
       The process of removal of material from the horizon is called eluviation geology or soil or leaching. There is a difference in the use of this term in geology and soil science. In soil science, eluviation is the transportation of soil from the top layer of soil to the lower level with rainfall down the water in the soil horizon, and the accumulation of material at a lower level is called illuviation.

       Eluvial gold placed by the process of gravity on the surface of the hill, up and flat-lying areas. Particles of minerals or ore-forming mineral deposit type is deposited on top of a rocky hillside source. In some areas found in eluvial placer with ingredients that create economic value accumulated in the pockets of bedrock surface. Rainfall helps to bring the material surface, or floating, downslope. Eluvial deposits consist of fragments of rock and soil which are not consolidated lying on the surface. It is derived from coral quartz and other minerals deposits (supergene, reef quartz and layer) located at the top. Transported material contain gold deposits also form on the surface of the slope of the hill where the concentrated on changes in gradients, like, bottom of the hill. Deposits are usually located near the eluvial placer, which is an irregular surface on the hillside below the mineral resource.
       The location consists of a mixture of rock, gravel and debris that has been weathered and destroyed the nearby hill is the place easy to find gold. Gold is found in locations like this are usually rough and very concentrated on the bedrock. Eluvial containing gold and scheelite material highly enriched in arsenic, antimony and tungsten features that can be used in geochemical candidate for this type of deposit.
      Gold in fine fraction of gravel and sand-free; in coarse fraction is mainly in sulfide minerals (pyrite, arsenopyrite, galena, sphalerite, stibnit, sulphosalts silver) and their oxidation products. Part of the silver in sulfide and alloy sulphosalts and part is with real gold. Average test some placer materials show the following: Sn 84 ppm, 15 ppm Hg, 9.44 ppm Ag and 0058 ppm Au. Approximately 550 million m3 of gravel are present in the fans.
     Gold forms crystal deposits in hard rock is generally known as veins. A layer is usually formed in areas where the rocks that contain veins have been altered in some way. Gold is found in layers that are bound with sulfide minerals and Telluride. Mineral gradually destroyed by natural wind or rain, leaving only the gold behind. gold may range from pieces of grain-size nuggets.