Why does plutonium not occur in natural ore deposits?

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In Mining
Plutonium occur in deposits of uranium ores but only in ultratraces. In the nature plutonium appear as a result of spontaneous natural fission of uranium isotopes a process with a very low cross section.
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How is gold deposited in the ore bodies where it is found?

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 (MORE)

Why are there no appreciable deposits of plutonium in the earth's crust?

Only a trace of plutonium is naturally found in the earth's crust. And it is always found with uranium because it is made by uranium's spontaneous fission, neutron release, and the subsequent neutron capture by another uranium nucleus to form the plutonium atom. Plutonium is not formed by the death (MORE)

Where does deposition occur?

Usually at the bottom of lakes, seas, and oceans, although some deposition will occur on dry land in basins. Or Stream deposition occurs as streamflow drops below the critical setting velocity of a certain particle size......:-)hismejohn

When does deposition occur?

when sediment transportation isn't sufficient enough to overcome the particle weight and friction which resists motion

Why does deposition occur in the inside?

Deposition happens on the inside because the water current there is slower than the outside. The inside has less energy to carry the weight of the soil and pebbles, therefore it deposits them on the way, to lessen the load.

Is iron ore a natural resource?

Iron is a natural resource. It is found in nature as Iron Ore, which is iron with oxygen and other impurities. These impurities are removed by heat treating the Iron Ore and melting away the impurities, due to different melting points of the impurities.

Why are most metals found in nature as ores?

Earth has a strongly oxidizing atmosphere. Combine that with water which can contain acids and other solutes and it becomes difficult for a metal to remain in its elemental state for long periods of time. A mass of metal may be buried for millions if not billions of years.

Why can a mineral deposit containing a useful element not be an ore?

If a mineral deposit is in a remote inaccessible place where it would be too costly to remove and transport, or if the mineral was too costly to extract and purify to obtain the desired element, it would not be considered an ore. Ores are substances that can be removed and processed in an economical (MORE)

How does deposition occur?

Deposition happens when the forces like wind, water, and ice dropor lay down sediments on a new part of land that it has not been onbefore.

How do metallic ore deposits form?

Metallic ore deposits form after geothermal concentration. Then the structure collapses, the deposits settle until shifted by the teutonic plates. Metallic ore can be found anywhere however there are areac of concentration based on the former edged of bodies of water.

How did the gold ore become placer deposits in the Klondike River?

The gold is formed in veins in the bedrock. Weathering and erosion break down the bedrock and release the gold particles that are then washed into the rivers. The force of the water in the rivers washes the sand and gold downstream but the gold is very heavy and settles out (collects) in places wher (MORE)

What causes deposition to occur?

What causes deposition to occur? . What is eroded material called? . What is deposited material called? . How do rivers create valleys? . What is a meander and how do they form? . What causes flood plains to form?

Why does a chain reaction not occur in uranium ore?

In order for a chain reaction to occur, there must be enough radioactive material to join in the reaction. In ore, the levels of reactive uranium is very low; therefore, it is no where near the critical mass of fission, which makes it radioactively inert. However, this does not mean that uranium ore (MORE)

What is another name for an ore deposit?

lode    [lohd] Show IPA. noun. 1.. a veinlike deposit, usually metalliferous.. 2.. any body of ore set off from adjacent rock formations.. 3.. a rich supply or source.. 4.. British . a waterway or channel. .

How is plutonium found in nature?

Plutonium can be found accompanying uranium minerals but only in insignificant traces. Plutonium is obtained as an industrial product in nuclear reactors. A low pollution from nuclear facilities or nuclear weapons tests exist in the environment now. The chemical form is probably plutonium diox (MORE)

What is plutoniums occurence?

As a natural chemical element plutonium exist only in traces in uranium ores. A not important today contamination of soils, waters and atmosphere is derived from nuclear weapons tests and nuclear facilities accidents.

Is plutonium a man made or a natural?

Plutonium was discovered by Glenn T. Seaborg, Edwin M. McMillan, Joseph W. Kennedy and Arthur C. Wahl at the Berkeley Laboratory of the University of California (United States) after the bombardment of uranium with deuterons, in 1940. Now plutonium is obtained in the nuclear reactors. Plutonium is (MORE)

What must happen for deposition to occur?

Answer First, there must be a lawsuit filed with the court. There are timeframes in which a deposition can occur and it must be done within that time frame. The attorney requesting the deposition must send a notice to the other party's attorney of the intent to take a deposition.

Where do you find plutonium in nature?

Plutonium 244 - it's most stable isotope - is found in trace amounts in nature. It is the heaviest element that can be naturally formed in nature (in a supernova explosion), but is never found in more than trace amounts. Virtually all plutonium used by man is man-made.

How does deposition in a meander occur?

The inside of themeander has fastr flowing water, so it erodes the river bed. But the inside of the meander has lower flowing water so the material that the water carries is deposited forming river beaches.

When and why does deposition occur?

Deposition occurs when sediments and materials carried by a transportation agent is been dropped. Why this happens most times, is because of reduction in power or strength of the transport medium.