What is a metallic ore deposit?
Metallic ore deposits, however, are relatively rare concentrations of metal‐bearing minerals (usually sulfides) that contain enough metal to be profitably mined. The metallic minerals are concentrated into rich masses by igneous, hydrothermal, or erosional/weathering processes.
What are metal deposits called?
Certain kinds of mineral can be smelted more readily than others; these are commonly referred to as ore minerals. Ore minerals tend to be concentrated in small, localized rock masses that form as a result of special geologic processes, and such local concentrations are called mineral deposits.
What are the types of ore deposits?
Types of Ore Deposits
- Komatiite-associated nickel deposits.
- Layered mafic-ultramafic intrusion deposits.
- Skarn deposits.
- Fractionated granitoid-associated deposits.
- Porphyry-associated deposits.
- Iron oxide copper gold deposits.
- Syn-deformational hydrothermal and replacement deposits.
- Orogenic gold deposits.
How are metal deposits formed?
Deposits of minerals form when a medium that contains and transports mineral-making ore releases and deposits the ore. When magma or lava cools, the magma and ore carried within it crystallize to form tiny minerals in the newly-created igneous rock.
What is an ore deposit?
An ore deposit consists of one or more ore bodies. An ore body is a mass of rock that contain ore and from which a commodity of value will be extracted. Not all ore within an ore body will be extracted. Ore bodies are divided into reserves and resources. (2013) “What is an ore deposit?,” in Ore Deposit Geology.
What is sedimentary ore deposits?
Sedimentary processes form ore either through the selective removal of nonmetallic components or by concentration of metallic minerals. Rock at the earth’s surface is subjected to weathering and leaching, the process that turns rock into soil.
Which are metallic minerals?
Metallic minerals are minerals which contain one or more metallic elements. Metallic minerals occur in rare, naturally formed concentrations known as mineral deposits. Ontario is a leading producer of metals such as platinum group metals, nickel, cobalt, gold, copper, silver and zinc.
Why are metallic minerals found in igneous deposits?
Answer: The development of metallic ores in intrusive rocks, such as porphyry copper deposits, is related to the partial melting and rising of crustal material along subduction zones. Metal in these systems may also be contributed from sea‐floor deposits that were subducted and became part of the new magma.
What are minerals deposits?
Mineral deposits are naturally occurring accumulations or concentrations of metals or minerals of sufficient size and concentration that might, under favourable circumstances, have economic value. Economic concentrations of metals or other mineral commodities are known as ore.
Which ore deposits are formed by sedimentary processes?
The process of sedimentation results in the formation of some important mineral deposits viz., iron, manganese, copper, phosphate, coal, oil shale, carbonates, cement rock, diatomaceous earths, bentonite, fuller s earth magnesite, sulfur and uranium-vanadium deposits. 4) deposition of material in sedimentary basins.
What is residual ore deposits?
RESIDUAL DEPOSITS IN GENERAL-The residual deposits are the insoluble products of rock weathering which have escaped distribution by transporting agencies, and which still mantle the rocks from which they have been derived.
What kind of minerals are found in ore deposits?
Most metallic ore minerals are native elements, sulfides, sulfosalts, oxides, or hydroxides. Ore deposits are highly variable in nature and origin. The most important kinds of ore deposits are magmatic, hydrothermal, or sedimentary.
How are metallic deposits different from other deposits?
Metallic Deposits. Metals occur in all kinds of rocks but usually in concentrations that are too low to be mined. Metallic ore deposits, however, are relatively rare concentrations of metal‐bearing minerals (usually sulfides) that contain enough metal to be profitably mined. Again, the profit line is dependent on a number of economic factors.
Which is the best type of metal ore?
The best metal ore minerals are those that contain large amounts of metals of value. Most metallic ore minerals are native elements, sulfides, sulfosalts, oxides, or hydroxides. Ore deposits are highly variable in nature and origin.
How does an ore form in a rock?
Ore minerals form as a result of special geologic processes and often occur in isolated, small, localized rock masses. Such local concentrations are called mineral deposits. Mineral deposits are what prospectors seek.
