While ore forming minerals are those which are combined to form the ores. Ores are like the rocks but formed as the result of special geological process containing the metals with them which can be extracted. The common ore forming minerals are Chromite, colton,Hematite, magnetite(iron) etc. View Notes - Ore Forming from GEOLOGY 13 at Aligarh Muslim University. Ore Forming Minerals: Metallic & Non-Metallic Minerals Certain kinds. An ore is an occurrence of rock or sediment that contains sufficient minerals with economically The grade or concentration of an ore mineral, or metal, as well as its form of occurrence, will directly affect the costs associated with mining the ore.
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Smelting processes are discussed below, but of primary importance in this consideration ore forming minerals the suitability of an ore mineral is the amount of energy needed to break the chemical bonds and release the metal.
In general, less energy is needed to smelt sulfide, oxide, or hydroxide minerals than is ore forming minerals to smelt a silicate mineral. For this reason, few silicate minerals are ore minerals.
NSDL at Niscair: Rock and Ore Forming Minerals
Because the great bulk of the Earth's crust about 95 percent is composed of silicate minerals, sulfide, oxide, and hydroxide ore minerals are at best only minor constituents of the Earth's crust--and in many cases they are very rare constituents.
The preferred ore minerals of both geochemically abundant and geochemically scarce metals are native metals, sulfides, oxides, hydroxides, or ore forming minerals. In a few cases, silicate minerals have to be used as ore minerals because the metals either do not form more desirable ore forming minerals or form desirable minerals that rarely occur in large deposits.
Demand for new metals derived from ore deposits is decreasing, largely due to recycling.
Demand for non-metals is increasing. No deposit consists entirely of a single ore mineral.
Difference between rock forming and ore forming minerals
There is always an abundance of worthless minerals, collectively called gangue. The more abundant an ore mineral, the more valuable the mineral deposit.
For every mineral deposit there is a set of conditions, such as the level of concentration and the size of the deposit that must be reached if the deposit is to be worked at a profit. A mineral deposit that is sufficiently rich to be worked at a profit is called an ore deposit.
The assemblage of ore minerals and gangue in a deposit is called ore forming minerals ore.
Metals used in industrial and technological applications can be divided into two classes on the basis of their abundance in the Earth's crust. Ore forming minerals geochemically abundant metals, of which there ore forming minerals five aluminum, iron, magnesium, manganese, and titaniumconstitute more than 0.
In almost every rock, at least tiny amounts of all metals can be detected by sensitive chemical analysis. However, there are important differences in the way the abundant and scarce metals occur in common rocks.
Difference between rock forming and ore forming minerals -
Geochemically abundant metals tend to be present as essential constituents in minerals. For example, basalt, a common igneous rock, consists largely of the minerals olivine and pyroxene both magnesium-iron silicatesfeldspar calcium-aluminum ore forming mineralsand ilmenite iron-titanium oxide.
Careful ore forming minerals analysis of a basalt will reveal the presence of most of the geochemically scarce metals too, but no amount of searching will reveal minerals in which one or more of the scarce metals is an essential constituent.
Other, lesser, commodities do not have international clearing houses and benchmark prices, with most prices negotiated between suppliers and customers one-on-one.
This generally makes determining the price of ores of this nature opaque and difficult. Such metals include lithiumniobium - tantalumbismuthantimony and rare earths.
The London Metal Exchange aims to add uranium to ore forming minerals list of metals on warrant.