Sep 19, 2014 . An ore is a naturally occurring mineral from which a pure metal can be extracted. The extraction process Before a mine is even opened the potential site is . Platinum is third densest metal in the crust so it will sink to the.
Mar 20, 2012 . By what processes do ores form? . It is least costly to extract the iron from oxide minerals like hematite (Fe2O3), magnetite (Fe3O4), or limonite [Fe(OH)]. Aluminum is the third most abundant mineral in the Earth's crust.
Nov 9, 2008 . 12.3.2 Steps to balance a chemical equation ... 21 The Lithosphere - Grade 11. 397 . 21.6.1 Iron mining and iron ore processing .
The method used to extract copper from its ores depends on the nature of the ore. The iron in the chalcopyrite ends up converted into an iron(II) silicate slag.
processes; open cast mining and the extraction of iron and phosphates; as well as the formation . investigating the impact of all these activities on our lithosphere.. A resource on iron ore mining process.
Asthenosphere - The layer or shell of the Earth below the lithosphere, which has . Block caving - An inexpensive method of mining in which large blocks of ore are . Chalcopyrite - A sulphide mineral of copper and iron; the most important ore.
. most abundant rock-forming elements, constituting about 5% of the Earth's crust. Iron ores are rocks from which metallic iron can be economically extracted. Most iron ores mined today comprise the iron oxide minerals hematite, Fe2O3 . Concentration includes all the processes that will increase (upgrade) the iron.
You are here: Home › Grade 11 Physical Sciences › The lithosphere › Mining . This was the earliest method used to extract the mineral from the ore.. Below is a list of some of these characteristics that have made gold such a valuable metal:.
. of diamonds is in kimberlites found in the upper sections of the Earth's crust. The most commonly used extraction method for diamondiferous material is an open mined technique. Picture from First Metal Inc. Washing is the next step for removing yet finer diamonds from the abundance of mined diamond ore.