How To Find Alluvial Gold Deposits

Eluvial placers usually represent a transitional stage between a residual placer and a stream placer. Genesis  or eluvial gold placer deposits formed by precipitation  and reconcentration  gold-bearing sediments from the occurrence of primary gold. Where one type merges into another, they cannot be clearly distinguished. They are characteristically found in the form of irregular sheets of surface detritus and soil mantling a hillside below a vein or other source of valuable mineral. It should be noted that the parent vein or lode mayor may not outcrop at the actual ground surface.Placer deposits are generally  classified  according  to their depositional  environment. Eluvial placers differ from residual placers in that surface creep slowly moves the gold and weathered detritus down hill, allowing the lighter portions to be removed by rain wash and wind. As the detrital mass gravitates downhill, a rough stratification or concentration of values may develop but this is rarely perfected to the degree found in stream placers.Marine placers occur offshore near the coast; fluvial placers occur in river valleys  and in the watershed  are analyzed that contain the incidence  of primary  gold upstream. In conducting searches eluvial gold vein that we need to do  is find a location mountainous areas  or hilly areas that have a strong granite or crystalline deposits is the good end. Area where geological upheaval has occurred and the pressure  is a prime location. The place to look for gold eluvial including creeks and ditches along the sides of hills and in depressions between the hills. Eluvial deposits occur on the hillsides  and in the hollows between the hills.Eluvial placers are typically limited in extent but there have been cases such as at Round Mountain, Nevada, (Vanderhurg, 1936, pp. 133·145) where this type of placer supported large-scale mining operations.

      Eluvial gold can be found in the low hills, rises and flat-lying areas adjacent to the location above. This is often covered with debris of quartz and iron ore. Eluvial deposits are concentrated in the gradient changes, such as the bottom of the hill.supergene deposits found on low hills or flat-lying areas which have developed laterite profile above bedrock. Supergene gold occurrence is difficult to predict because it is controlled by a complex combination of processes

    

Fools Gold In Rock Minerals

With the chemical formula FeS2 pyrite, is one of the types of sulphide minerals which are common in nature, either as a byproduct of a hydrothermal deposits or as accessory minerals in some rock types. Descriptively, pyrite has a golden yellow color with a metallic sheen. So, if you are not familiar with metallic minerals, and pyrite is often regarded as the gold. In the crystal structure, both pyrite and gold together cabbage, but the nature of it that are different. Gold is more malleable than pyrite. If beaten, pyrite will shatter, whereas gold is not easily destroyed because they are more malleable. The mineral pyrite, or iron pyrite, is iron  sulfide with the formula FeS2. Glittering metallic  mineral is pale-to-normal, brass yellowish  hue, and often also earned the nickname as a stupid  gold due to its resemblance  to gold. PHYRITE  name comes from the Greek (puritēs), "fire" or "in fire",  from (pur), "fire". In ancient Roman times, this name was applied to  several types of stone that will create a spark when struck against steel. Pyrite  is usually found associated  with other sulfides or oxides in quartz veins, sedimentary rock, and metamorphic rocks, and  also in coal beds, and as a replacement  mineral in fossils. Although  dubbed the dumb gold, pyrite  is sometimes also contain a small amount of gold in it. Gold and arsenic  occurs as a coupled substitution in the pyrite structure. In the Carlin gold deposit, Nevada, arsenian pyrite contains up to 0.37 wt% gold.

Mineral Facts Phyrite:

Potential Mineral Resources Of Gold Ore

Gold is formed from a process magmatisme or mineral concentration  at the surface. Some  precipitate  formed  due process and hydrothermal solutions metasomatis contacts and often together minerals pyrite and other sulfides, silver-gold telurid, skhelit and tourmaline, whereas the concentration of sediment  mechanically  produce  put (placer). as are generally contained in a hydrothermal  zone  where  hydrothermal  zones  in general is a volcanic area. Some solutions come from the release of  water  contained  in the  magma  when  the magma  rises  and cools. Others originated from meteoric water or sea water circulating in the crust. Mineral deposit  formed  by the heated sea water volcanic activity, and sediment shaped sulfide compound, called volcano genic massive sulfide deposits.

      Genesis of gold itself is said that gold comes from a reservoir that is the core of the earth  from which the magmatic water containing sulfide ions, chloride ions, and ion transport tio metal complexes of gold to the surface of  the earth. The direction of  flow  of chemical solution  containing  gold  are generally in line with the volcanic magma channel forming veins of gold. When a solution of  gold  deposited  on the  channel  that has been frozen magma hydrothermal  process, which is heading volcanic activity occurred from contact with meteoric water,  hot rocks or magmatic water upward movement in which both carry and dissolve the  sulfide-chloride ion complex-tio which causes the deposited gold on earth's surface. When the gold bearing  veins  become weak, then gold will be separated and then precipitate as eluvial

  

The Process Ore Formation Of Mineral

      Ore mineralization is the process of formation of minerals in ore deposits role in a rock. In the formation of these minerals are also associated with other minerals minerals. Formation of these minerals show credentials such as shape, appearance parts, twinning and others. Some minerals form a well-developed crystals (euhedral) pyrite, hematite, wolframite, arsenopyrite, cobalt, magnetite. Standard forms crystals in mineralogy: Cubic, octahedral, tabular, accicular, columnar, bladed, fibrous, colloform, micaceous, prismatic

      The crust consists of rocks-igneous, sedimentary, and metamorphic. Understanding is the deposits of mineral ore that can be extracted (taken) economically valuable minerals, and ore in a deposit is dependent on two main factors, namely the level of concentrated (precious metal content in the sediment), the location and size (dimensions) precipitate. To achieve the levels of economic, minerals ore or valuable mineral components are naturally concentrated in the crust until a certain minimum level depends on the type of ore or mineral.

 The Process Of Formation Of Mineral Deposits Of Primary

Difference Of Gold Ore And Pyrite

People often think phyrite as a golden appearance, which resembles gold glitter. Occasionally someone asks, if pyrite is gold? Or is this auriferous pyrite??? Indeed, often times the physical appearance of the mineral pyrite is almost like a mineral ore of gold, maybe some people who never see it will think that the mineral pyrite is gold metal. Physical appearance is almost similar to the gold ore PHYRITE, markasit, and chalcopyrite seen from the color, but can be distinguished from its soft, high density, and golden appearance. Gold associated with quartz, phyrite, arsenopyrite, and Silver. The physical properties of gold is very stable, not corrosive or weathered and rarely had a compound with other chemical elements. Electrical and thermal conductivity is very good, malleable so it can be formed and also be ductile. Gold is the most high-density metals.