- published: 18 Sep 2009
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An ore is a type of rock that contains minerals with important elements including metals. The ores are extracted through mining; these are then refined to extract the valuable element(s).
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. The cost of extraction must thus be weighed against the metal value contained in the rock to determine what ore can be processed and what ore is of too low a grade to be worth mining. Metal ores are generally oxides, sulfides, silicates, or "native" metals (such as native copper) that are not commonly concentrated in the Earth's crust 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 geological processes. The process of ore formation is called ore genesis.
An ore deposit is an accumulation of ore. Now this is distinct from a mineral resource as defined by the mineral resource classification criteria. An ore deposit is one occurrence of a particular ore type. Most ore deposits are named according to either their location (for example, the Witswatersrand, South Africa), or after a discoverer (e.g. the kambalda nickel shoots are named after drillers), or after some whimsy, a historical figure, a prominent person, something from mythology (phoenix, kraken, serepentleopard, etc.) or the code name of the resource company which found it (e.g. MKD-5 is the in-house name for the Mount Keith nickel ).
Mark Freuder Knopfler, OBE (born 12 August 1949) is a Scottish-born British guitarist, singer, songwriter, record producer and film score composer. He is best known as the lead guitarist, vocalist, and songwriter for the British rock band Dire Straits, which he co-founded in 1977. After Dire Straits disbanded in 1995, Knopfler went on to record and produce six solo albums, including Golden Heart (1996), Sailing to Philadelphia (2000), and Get Lucky (2009). He has composed and produced film scores for eight films, including Local Hero (1983), Cal (1984), and The Princess Bride (1987). In addition to his work with Dire Straits and as a solo artist and composer, Knopfler has recorded and performed with many prominent musical artists, including Phil Lynott, Chet Atkins, The Chieftains, Eric Clapton, Bob Dylan, Emmylou Harris, Jools Holland, Sonny Landreth, and Van Morrison. He has produced albums for Tina Turner, Bob Dylan, and Randy Newman.
Knopfler is one of the most respected fingerstyle guitarists of the modern rock era, and was ranked 27th on Rolling Stone magazine's list of 100 Greatest Guitarists of All Time. Knopfler and Dire Straits have sold in excess of 120 million albums to date. A four-time Grammy Award winner, Knopfler is the recipient of the Edison Award and the Steiger Award, and holds three honorary doctorate degrees in music from universities in the United Kingdom.