Editing Canadian Shield (section)

== Mining and economics ==
The Canadian Shield is one of the world's richest areas in terms of [[mineral]] [[ore]]s. It is filled with substantial deposits of [[nickel]], [[gold]], [[silver]], and [[copper]]. There are many mining towns extracting these minerals. The largest, and one of the best known, is [[Greater Sudbury|Sudbury]], Ontario. Sudbury is an exception to the normal process of forming minerals in the shield since the [[Sudbury Basin]] is an ancient [[meteorite]] [[impact crater]]. [[Ejecta]] from the meteorite impact was found in the [[Rove Formation]] in May 2007. The nearby but less-known [[Temagami Magnetic Anomaly]] has striking similarities to the Sudbury Basin. This suggests it could be a second metal-rich impact crater.<ref name="GH">[http://gdcinfo.agg.nrcan.gc.ca/app/3Dimaging/temagami_e.html 3-D Magnetic Imaging using Conjugate Gradients: Temagami anomaly] {{webarchive|url=https://web.archive.org/web/20090711184237/http://gdcinfo.agg.nrcan.gc.ca/app/3Dimaging/temagami_e.html |date=2009-07-11 }} Retrieved on 2008-03-12</ref> In northeastern Quebec, the giant [[Manicouagan Reservoir]] is the site of an extensive [[Hydroelectricity|hydroelectric]] project (Manic-cinq, or Manic-5). This is one of [[List of impact craters on Earth#Largest craters (10 Ma or more)|the largest-known meteorite impact craters on Earth]], though not as large as the Sudbury crater.

The [[Flin Flon greenstone belt]] in central Manitoba and east-central Saskatchewan "is one of the largest [[Paleoproterozoic]] volcanic-hosted massive [[sulfide]] ([[Volcanogenic massive sulfide ore deposit|VMS]]) districts in the world, containing 27 [[copper]]-[[zinc]]-([[gold]]) deposits from which more than 183 million tonnes of sulfide have been mined."<ref>Troymet Exploration, ''[https://web.archive.org/web/20080530010956/http://www.troymet.com/i/pdf/2007McClarty43-101.pdf Report on the 2007 Diamond Drilling Program, McClarty Lake Project, Manitoba: The Pas Mining District NTS 63-K-08; UTM ZONE 14 N 415938 E, 6038968 N; 54° 29′ 28″ N 100° 17′ 52″ W]'', by Jessica Norris & Tracy Hurley (Whitehorse, Yukon: Aurora Geosciences, 2007‑09‑24).</ref> The portion in the Northwest Territories has recently been the site of several major [[diamond]] discoveries. The [[kimberlite]] pipes in which the diamonds are found are closely associated with cratons, which provide the deep [[lithosphere|lithospheric]] [[Mantle (geology)|mantle]] required to stabilize diamond as a mineral. The kimberlite eruptions then bring the diamonds from over {{convert|150|km}} depth to the surface. The [[Ekati Diamond Mine|Ekati]] and [[Diavik Diamond Mine|Diavik]] mines are actively mining kimberlite diamonds.