USGS Mineral Resources Program CopperA Metal for the Ages
Resources Program. Copper deposits are broadly classified on the basis of how the deposits formed. Porphyry copper deposits which are associated with igneous intrusions yield about twothirds of the worlds copper and are therefore the worlds most important type of copper deposit. Large copper deposits
Copper Leaching Method Metallurgist and Mineral Processing
This expense may be greatly reduced or even wholly removed when sulphides are available for by roasting the latter and passing the gases containing sulphur dioxide into electrolyzing cells the amount of current required to deposit copper is reduced and an excess of acid accumulates for use in leaching new batches of ore.
Prospecting from Orbit NASA
Prospecting from Orbit. Mining for ore isnt what it used to be. A hundred years ago when a mining operation happened upon a copper vein or a gold deposit the outfit would often just rip out the local flora excavate the land and dump the resulting waste and rubble in the nearest pristine stream or flowering meadow.
Black deposit on inside of copper still Equipment ADI Forums
Water softeners substitute salt NaCl for other minerals. That could result in part in the formation of copper chloride dihydrate among other things. To remove copper salts etch with hot dilute citric acid normally part of refreshing a still . We never use softened water we use RO water. If you need to demineralize then use RO.
Innovations: Introduction to Copper: Mining and Extraction
For commercial exploitation copper deposits generally need to be in excess of 0.5 copper and preferably over 2. The known reserves of highergrade ore in the world amount to nearly 1 billion tons of copper.
A new technique for finding copper deposits
A new technique could revolutionise the way mining companies identify copper deposits particularly those lo ed deep underground.. The method focuses on the exploration for porphyrytype copper
The worlds top 10 highestgrade copper mines MINING.COM
First Quantums CLC copper deposit is exceptionally rich and with ore reserves grading 5 copper it is believed to be the highestgrade openpit active copper mine worldwide.