Mineral Deposits

Potential for new Nickel-Copper Sulfide Deposits in the Lake Superior region

Eastern Publications Group "USGS , science for a changing world " Potential for new Nickel-Copper Sulfide Deposits in the Lake Superior region .1998 . 23 Jan . 2008 HYPERLINK "http /www .pubs .usgs .gov /info-handout /mwni_cu http /www .pubs .usgs .gov /info-handout /mwni_cu , HYPERLINK "http /minerals .usgs .gov /news /newsletter /v1n2 /5alaska .html http /minerals .usgs .gov /news /newsletter /v1n2 /5alaska .html

U .S . Geological Survey scientists are examining for potential undiscovered sulfide deposits containing varying amounts of nickel copper , platinum-group metals , and cobalt

. A Ni-Cu sulfide deposits (known as magmatic sulfide deposits ) begins with the melting of hot mantle rising as a plume from deep in the Earth . It was said to be examined in Western Lake Superior between Minnesota and Wisconsin last November 1997 where scientists were evaluating the mineral potential of the United States . Scientists said that it has a variation of nickel copper , platinum-group metals , and cobalt . Scientists also is trying to figure out if these deposits are related to the Mid-continent rift system that formed about 1 .1 billion years ago when fracturing of the crust led to large outpourings of basaltic lava and emplacement of related intrusions . It is also said to be 50 .00 /lb . Basaltic magma was produced in the melting process , which then goes into the crust and then will form magma chamber as the sulfide droplets separates , they scavenge metals like nickel , copper , platinum (Pt , and palladium (Pd ) from the magma . If these sulfide droplets become very much concentrated , then a magmatic sulfide deposit is formed . They are considered Paleozoic in age are Triassic flood basalts and can be associated with rocks having high potential for nickel , copper , and platinum-group element deposits GOLD

Kirkemo ,Harold . Newman ,William and Ashley , Roger "USGS science for a changing world " GOLD .1997 . 23 Jan . 2008 HYPERLINK "http /pubs .usgs .gov /gip /prospect1 /goldgip .html http /pubs .usgs .gov /gip /prospect1 /goldgip .html

Gold was one of the first metals to be mined because it takes place in its native form , that is , not combined with other elements , It is also said to be nice and it can never be destroyed . You can even make valuable things out of it . The gold in the Aztec and Inca treasuries of Mexico and Peru believed to have come from Colombia . Gold in the Depository is made out ofbars about the size of ordinary bricks (7 x 3 5 /8 x 1 3 /4 inches ) that weigh about 27 .5 pounds each (about 400 troy ounces 1 troy ounce equals about 1 .1 avoirdupois ounces ) Pure gold is soft--it is as hard as a penny . It is also malleable and ductile of all the metals . The density of pure gold is 19 .3 compared to 14 .0 for mercury and 11 .4 for lead . Mercury (quicksilver ) has a chemical affinity for gold . When you add mercury to a gold-bearing material , then the two metals form an amalgam . Gold can be dissolved...