Shopping on line can be easy, simple and save you lots of money. It can also take a lot of your time, frustrate you, and result in unwanted purchases. Now the same can be said for regular high street shopping, but with the vast opportunity presented by the Internet it will pay you to spend a few minutes reading this and understanding how to better optimize your Ore shopping experience:
1. Compare - without doubt the biggest advantage that the Ore offers shoppers today is the ability to compare thousands of Ore at a time. This is a great thing, but not necessarily all the time! Too much can be daunting at times so take advantage of the great comparison sites and where possible let them do the hard work for you.
2. Research - if it has been said it will be on the internet. Ignorance is no longer a justifiable reason for buying the wrong thing. Take the time to research in detail everything that you could possible want to know about
3. Testimonials - don't know anybody that has bought a Ore? Wrong! If the Ore is good the internet will let you know. Use the Internet as a friend and get testimonials before you buy.
4. Questions - Got a question about Ore then search the Forums, FAQ's, Blogs etc. Don't be afraid to ask .....
5. Reputation - Never heard of the company selling Ore? Don't worry, no reason why you should know every company in the world, but you know someone that does! Use the internet to find out what people are saying about Ore and build up a picture of their reputation for sales, returns, customer service, delivery etc.
6. Returns - still worried that even after all of the above your Ore wont be what you want? Check out the returns policy. There is so much competition now that someone, somewhere is bound to offer the terms that you are comfortable with.
7. Feedback - happy with your Ore then let people know, after all you are depending on others people input in your buying decision, so why not give a little back.
8. Security - check for the yellow padlock on the Ore site before you buy, and the s after http:/ /i.e. https:// = a secure site
9. Contact - got a question about Ore, or want to leave a comment then check out the sites contact page. Reputable companies have them and respond.
10. Payment - ready to pay for your Ore, then use your credit card or PayPal! Be aware of companies that don't accept them, there may be genuine reasons but given the huge amount of choice you have when buying online there is no reason at all not to buy via credit card or PayPal.
ore (
Banded iron formation) ore ore ore imports in 2005An
ore is a volume of
Rock (geology) containing components or minerals in a mode of occurrence that renders it valuable for mining. An ore must contain materials that are
- valuable
- in concentrations that can be profitably Mining, transported, milled, and processed.
- able to be extracted from waste rock by mineral processing techniques.
Ore deposits are mineral deposits defined as being economically recoverable. Mineral deposits may include those bodies of mineralisation which are uneconomic resources, of too low a grade or tonnage or
technically impossible for extraction of the contained metal.
What is valuable to mine is generally considered in terms of purely economic considerations. However, cultural,
strategic or social goals of nations,
tribes, and individuals may render
economically unfeasible bodies of rock valuable for extraction, for instance
ochre, some
clays, and ornamental stones that are of religious, cultural or sentimental value to a population. Here, value is placed on the rock in non-economic terms.
Rare samples of ore in the form of exceptionally beautiful
crystals, exotic layering (when sectioned or polished) or metallic presentations such as large nuggets or crystalline formations of metals such as
gold or copper may command a value far beyond their value as mere ore or raw metal for subsequent reduction to utilitarian purposes.
Ore is thus an economic entity, not a physical entity. Fluctuations in commodity prices will determine what rock is considered valuable and hence
ore, and what rock is not valuable and is considered
waste.Similarly, the costs of extraction may fluctuate, for example with fuel costs, rendering mining unprofitable and turning ore into waste.
The
grade or contained
concentration of an ore mineral, or metal, as well as its form of occurrence, will directly affect the costs associated with mining the ore. The cost of extraction must thus be weighted against the contained metal value of the rock and a 'cut-off grade' used to define what is ore and what is waste.
Ore minerals are generally
oxides,
Sulfide minerals,
silicate minerals, or "native" metals (such as
native copper) that are not commonly concentrated in the Earth's
crust (geology) or "noble" metals (not usually forming compounds) such as gold. The ores must be processed to extract the metals of interest from the waste rock and from the ore minerals.
Ore bodies are formed by a variety of
Geology processes. The process of ore formation is called
ore genesis.
Ore deposits
An ore deposit is an accumulation of ore. This is distinct from a mineral resource as defined by the mineral resource classification criteria. An ore deposit is one occurrence of the particular ore type. Most ore deposits are named according to either their location (for example the Witswatersrand, South Africa), or after a discoverer (eg; the kambalda type komatiitic nickel ore deposits nickel shoots are named after drillers), or after some whimsy, an historical figure, a prominent person, something from mythology (phoenix, kraken, etc) or the code name of the resource company which found it (eg; MKD-5 is the in-house name for the Mount Keith nickel mine).
Classification of ore deposits
Ore deposits are classified according to various criteria developed via the study of economic geology, or ore genesis. The classifications below are typical
Hydrothermal epigenetic deposits
- Mesothermal lode gold deposits, typified by the Golden Mile (Kalgoorlie), Kalgoorlie
- Archaean conglomerate (geology) hosted gold-uranium deposits, typified by Elliot Lake, Canada and Witwatersrand, South Africa
- Carlin type gold deposits, including;
- Dolomite-hosted jasperoid replacement subtype
- Epithermal stockwork vein deposits
Granite related hydrothermal
- IOCG or iron-oxide copper-gold, typified by the supergiant Olympic Dam Cu-Au-U deposit
- Porphyry copper +/- gold +/- molybdenum +/- silver deposits
- Intrusive-related copper-gold +/- (tin-tungsten), typified by the Tombstone, Arizona deposits
- Hydromagmatic magnetite iron ore deposits and skarns
- Skarn ore deposits of copper, lead, zinc, tungsten, etcetera
Nickel-cobalt-platinum deposits
- Magmatic nickel-copper-iron-PGE deposits including
- cumulate rocks vanadium or platinum-bearing magnetite or chromite
- Cumulate hard-rock titanium (ilmenite) deposits
- Kambalda type komatiitic nickel ore deposits
- Subvolcanic feeder subtype, typified by Norilsk and the Thompson Belt, Canada
- Intrusive-related Ni-Cu-PGE, typified by Voisey's Bay, Newfoundland and Labrador, Canada and Jinchuan, China
Volcanic-related deposits
- Volcanogenic massive sulfide ore deposit (VHMS) Cu-Pb-Zn including;
- Examples include Teutonic Bore and Golden Grove, Western Australia
- Besshi copper mine type
- Kuroko type
Metamorphically reworked deposits
- Podiform serpentinite-hosted paramagmatic iron oxide-chromite deposits, typified by Savage River, Tasmania iron ore, Coobina chromite deposit
- Broken Hill Ore Deposit Pb-Zn-Ag, considered to be a class of reworked SEDEX deposits
Carbonatite - alkaline igneous related
Sedimentary deposits
Sedimentary hydrothermal deposits
- Sedimentary exhalative deposits
- Lead-zinc-silver, typified by Red Dog, MacArthur River, Mt Isa, etc
- Stratiform arkose-hosted and shale-hosted copper, typified by the Zambian copperbelt.
- Stratiform tungsten, typified by the Erzgebirge deposits, Czechoslovakia
- Exhalative spilite-chert hosted gold deposits
- Carbonate hosted lead zinc ore deposits
- Hematite iron ore deposits of altered banded iron formation
Astrobleme-related ores
- Sudbury Basin nickel and copper, Ontario, Canada
Extraction
The basic extraction of ore deposits follows the steps below;
Prospecting or Mineral exploration to find and then define the extent and value of ore where it is located ("ore body")
Conduct mineral resource classification to mathematically estimate the size and grade of the deposit
Conduct a pre-feasibility study to determine the theoretical economics of the ore deposit. This identifies, early on, whether further investment in estimation and engineering studies is warranted and identifies key risks and areas for further work.
Conduct a feasibility study to evaluate the financial viability, technical and financial risks and robustness of the project and make a decision as whether to develop or walk away from a proposed mine project. This includes mine planning to evaluate the economically recoverable portion of the deposit, the metallurgy and ore recoverability, marketability and payability of the ore concentrates, engineering, milling and infrastructure costs, finance and equity requirements and a cradle to grave analysis of the possible mine, from the initial excavation all the way through to reclamation.
Development to create access to an ore body and building of mine plant and equipment
The operation of the mine in an active sense
Land rehabilitation to make land where a mine had been suitable for future use
Trade
Ores (metals) are traded internationally and comprise a sizeable portion of international trade in raw materials both in value and volume. This is because the worldwide distribution of ores is unequal and dislocated from locations of peak demand and from smelting infrastructure.
Most base metals (copper, lead, zinc, nickel) are traded internationally on the London Metal Exchange, with smaller stockpiles and metals exchanges monitored by the COMEX and NYMEX exchanges in the United States and the Shanghai Futures Exchange in China.
Iron ore is traded between customer and producer, though various benchmark prices are set yearly between the major mining conglomerates and the major consumers, and this sets the stage for smaller participants.
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 lithium,
niobium-tantalum, bismuth,
antimony and
rare earths. Most of these commodities are also dominated by one or two major suppliers with >60% of the world's reserves. The London Metal Exchange aims to add uranium to its list of metals on warrant.
The World Bank reports that China was the top importer of ores and metals in 2005 followed by the USA and Japan.
Important ore minerals
See also
ore (
Banded iron formation) ore ore ore imports in 2005An
ore is a volume of Rock (geology) containing components or minerals in a mode of occurrence that renders it valuable for mining. An ore must contain materials that are
- valuable
- in concentrations that can be profitably Mining, transported, milled, and processed.
- able to be extracted from waste rock by mineral processing techniques.
Ore deposits are mineral deposits defined as being economically recoverable. Mineral deposits may include those bodies of mineralisation which are uneconomic resources, of too low a grade or tonnage or
technically impossible for extraction of the contained metal.
What is valuable to mine is generally considered in terms of purely economic considerations. However, cultural,
strategic or
social goals of nations, tribes, and individuals may render
economically unfeasible bodies of rock valuable for extraction, for instance
ochre, some
clays, and ornamental stones that are of religious, cultural or sentimental value to a population. Here, value is placed on the rock in non-economic terms.
Rare samples of ore in the form of exceptionally beautiful
crystals, exotic layering (when sectioned or polished) or metallic presentations such as large nuggets or crystalline formations of metals such as gold or copper may command a value far beyond their value as mere ore or raw metal for subsequent reduction to utilitarian purposes.
Ore is thus an economic entity, not a physical entity. Fluctuations in
commodity prices will determine what rock is considered valuable and hence
ore, and what rock is not valuable and is considered
waste.Similarly, the costs of extraction may fluctuate, for example with fuel costs, rendering mining unprofitable and turning ore into waste.
The
grade or contained
concentration of an ore mineral, or metal, as well as its form of occurrence, will directly affect the costs associated with mining the ore. The cost of extraction must thus be weighted against the contained metal value of the rock and a 'cut-off grade' used to define what is ore and what is waste.
Ore minerals are generally
oxides,
Sulfide minerals,
silicate minerals, or "native" metals (such as
native copper) that are not commonly concentrated in the Earth's crust (geology) or "noble" metals (not usually forming compounds) such as
gold. The ores must be processed to extract the metals of interest from the waste rock and from the ore minerals.
Ore bodies are formed by a variety of
Geology processes. The process of ore formation is called ore genesis.
Ore deposits
An ore deposit is an accumulation of ore. This is distinct from a mineral resource as defined by the mineral resource classification criteria. An ore deposit is one occurrence of the particular ore type. Most ore deposits are named according to either their location (for example the Witswatersrand, South Africa), or after a discoverer (eg; the
kambalda type komatiitic nickel ore deposits nickel shoots are named after drillers), or after some whimsy, an historical figure, a prominent person, something from mythology (phoenix, kraken, etc) or the code name of the resource company which found it (eg; MKD-5 is the in-house name for the Mount Keith nickel mine).
Classification of ore deposits
Ore deposits are classified according to various criteria developed via the study of economic geology, or
ore genesis. The classifications below are typical
Hydrothermal epigenetic deposits
Granite related hydrothermal
- IOCG or iron-oxide copper-gold, typified by the supergiant Olympic Dam Cu-Au-U deposit
- Porphyry copper +/- gold +/- molybdenum +/- silver deposits
- Intrusive-related copper-gold +/- (tin-tungsten), typified by the Tombstone, Arizona deposits
- Hydromagmatic magnetite iron ore deposits and skarns
- Skarn ore deposits of copper, lead, zinc, tungsten, etcetera
Nickel-cobalt-platinum deposits
- Magmatic nickel-copper-iron-PGE deposits including
- cumulate rocks vanadium or platinum-bearing magnetite or chromite
- Cumulate hard-rock titanium (ilmenite) deposits
- Kambalda type komatiitic nickel ore deposits
- Subvolcanic feeder subtype, typified by Norilsk and the Thompson Belt, Canada
- Intrusive-related Ni-Cu-PGE, typified by Voisey's Bay, Newfoundland and Labrador, Canada and Jinchuan, China
Volcanic-related deposits
Metamorphically reworked deposits
- Podiform serpentinite-hosted paramagmatic iron oxide-chromite deposits, typified by Savage River, Tasmania iron ore, Coobina chromite deposit
- Broken Hill Ore Deposit Pb-Zn-Ag, considered to be a class of reworked SEDEX deposits
Carbonatite - alkaline igneous related
Sedimentary deposits
- Banded iron formation iron ore deposits, including
- Heavy mineral sands ore deposits and other sand dune hosted deposits
- Alluvial gold, diamond, tin, platinum or black sand deposits
- Alluvial oxide zinc deposit type: sole example Skorpion Zinc
Sedimentary hydrothermal deposits
Astrobleme-related ores
Extraction
The basic extraction of ore deposits follows the steps below;
Prospecting or Mineral exploration to find and then define the extent and value of ore where it is located ("ore body")
Conduct mineral resource classification to mathematically estimate the size and grade of the deposit
Conduct a pre-feasibility study to determine the theoretical economics of the ore deposit. This identifies, early on, whether further investment in estimation and engineering studies is warranted and identifies key risks and areas for further work.
Conduct a feasibility study to evaluate the financial viability, technical and financial risks and robustness of the project and make a decision as whether to develop or walk away from a proposed mine project. This includes mine planning to evaluate the economically recoverable portion of the deposit, the metallurgy and ore recoverability, marketability and payability of the ore concentrates, engineering, milling and infrastructure costs, finance and equity requirements and a cradle to grave analysis of the possible mine, from the initial excavation all the way through to reclamation.
Development to create access to an ore body and building of mine plant and equipment
The operation of the mine in an active sense
Land rehabilitation to make land where a mine had been suitable for future use
Trade
Ores (metals) are traded internationally and comprise a sizeable portion of international trade in raw materials both in value and volume. This is because the worldwide distribution of ores is unequal and dislocated from locations of peak demand and from smelting infrastructure.
Most base metals (copper, lead, zinc, nickel) are traded internationally on the
London Metal Exchange, with smaller stockpiles and metals exchanges monitored by the COMEX and NYMEX exchanges in the United States and the Shanghai Futures Exchange in China.
Iron ore is traded between customer and producer, though various benchmark prices are set yearly between the major mining conglomerates and the major consumers, and this sets the stage for smaller participants.
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
lithium, niobium-
tantalum,
bismuth, antimony and rare earths. Most of these commodities are also dominated by one or two major suppliers with >60% of the world's reserves. The London Metal Exchange aims to add uranium to its list of metals on warrant.
The World Bank reports that China was the top importer of ores and metals in 2005 followed by the USA and Japan.
Important ore minerals
See also
- Mineral resource classification
- Economic geology
- Ore genesis