0
Gold may be associated with PGE's and chalcophilic elements (Fe, Ni, Cu) that form at the base of magma bodies due to immiscible liquid separation resulting from sulphur oversaturated melts that precipitate out as droplets as temperature decreases, bonding with these elements and settling out due to their high specific gravity (4.5) to coalesce at the base of the melt. It can also be deposited in cracks and fissures by the action of hot ground water. Gold (as well as other elements) in tiny particles is carried in the hot water through the fissures building up into the deposits we find today. A good reference to the genesis of gold can be found in Gold by R.W. Boyle; published by Van Nostrand Reinhold New York.
What else can I help you with?
What are the two places were rich deposits of gold iron-ore and copper found?
Rich deposits of gold, iron-ore, and copper are found in South Africa and Australia. Both countries are known for their extensive mining operations and significant mineral reserves.
What property of gold allows it to be separated from sand or crushed ore by panning or sluicing?
Gold is much denser than sand or other minerals commonly found in ore. When panning or sluicing, the gold will settle to the bottom due to its high density, allowing it to be separated from the other lighter materials.
Igneous intrusions often are associated with valuable what?
Igneous intrusions are often associated with valuable mineral deposits such as gold, copper, and nickel due to the process of fractional crystallization where minerals concentrate as magma cools and solidifies. These valuable minerals may be trapped within the intrusive bodies or found in surrounding rocks affected by the intrusion.
Why is gold found as gold metal but aluminium is found as aluminium oxide?
Gold is a very unreactive element, so it occurs as gold metal in nature. However, aluminum is more reactive, and so it occurs in aluminum ore (aluminum oxide) in nature, not as aluminum metal.
Why is platinum found as a metal not an ore?
Platinum is found in its metallic form because it is unreactive and does not easily combine with other elements to form compounds. This results in it being found naturally as pure metal in deposits, rather than as an ore mineral that needs to be extracted and refined.
Is gold found underground?
Yes, usually gold is mined in underground mines. Gold can be found on the surface where it has been exposed by erosion and in river sediments.
How deep is gold ore in minecraft?
Gold ore is found at y=32 and below. This is the same depth that emerald and lapis lazuli can be found.
What are deposits of valuable minerals found in veins or layers?
Ore bodies.
How do you make gold in lotro?
You mine gold ore from gold deposits and then smelt them if you are a prospector; you get gold ingots. Gold ore can be found in the North Downs and probably many other places.
What Egyptian resource was found in Nubia?
In Nubia they found gold, copper and iron ore
Why are gold and silver not found as an ore?
Gold and silver are typically not found as an ore because they are typically resistant to oxidation and tend to exist in their elemental form in nature. They are usually found in placer deposits or as veins in rocks, rather than as compounds in ore minerals.
What ore is gold found in?
Gold is mostly found in it's natural form as gold nuggets, fine grains or flakes, or as grains or microscopic particles embedded in other rocks. Ores in which gold occurs in chemical composition with other elements are comparatively rare. They include calaverite, sylvanite,nagyagite, petzite andkrennerite.
What type of gold do they mine in Colorado?
Placer gold (gold dust found in rivers) and gold ore, including Telluride.
How is gold made in nature and what processes are involved in its formation?
Gold is formed in nature through a process called supernova nucleosynthesis, where heavy elements are created during the explosion of massive stars. These elements are then scattered into space and can eventually be incorporated into planets like Earth. Gold is often found in veins within rocks, where it is deposited by hydrothermal fluids carrying dissolved gold. Over time, geological processes such as erosion and sedimentation can concentrate these gold deposits into economically viable ore bodies.
What elements are usually found with gold ore?
Gold ore is commonly found with other elements including silver, copper, lead, zinc, and iron. It can also be associated with minerals such as quartz, pyrite, and arsenopyrite. The specific composition of gold ore can vary depending on the location and geological conditions where it is found.
Can you dig gold out of the ground?
Yes, gold is often found deep in the ground in ore deposits. It is mined by extracting the ore and then processing it to separate the gold from other minerals. This process involves crushing the ore, using chemicals to separate the gold, and finally smelting it to obtain pure gold.
What geologic processes contributed to the formation of gold ore?
Gold ore is formed through a process called hydrothermal deposition, where hot fluids carrying dissolved gold and other minerals move through cracks in the Earth's crust. As these fluids cool and react with the surrounding rocks, the gold is deposited and accumulates in veins or deposits. This process can take millions of years to create economically viable gold ore deposits.
