NATI Research Ltd.  
   About mineralogy of noble metals and highly sensitive techniques for measuring mineralogy of noble metals: metrological maintenance, "ppm-mineralogy" techniques, platinum group minerals and gold in rocks, ores, benefaction products and waste tai
   http://www.natires.com/

Cu-Ni-Co Deposit at Voisey's Bay, Labrador  
   About an example of a massive sulphide ore deposit.
   http://sciborg.uwaterloo.ca/earth/waton/voisey.html

Metalliferous Environments of Nova Scotia - Base Metals  
   Paper by James M. Patterson (1993) describes the geologic occurrence and extraction history of metallic ore deposits in Nova Scotia, Canada. These include volcanogenic, carbonate-hosted, and sandstone-hosted deposits plus deposits associated with granite
   http://www.gov.ns.ca/natr/meb/is/is22.htm

Current World Mining and Development Projects  
   Information on metallic and nonmetallic mining projects around the world, from exploration to recovery and processing. Featured projects include Bingham Canyon, Carlin Trend, Minera Yanacocha and Robinson.
   http://www.mining-technology.com/projects/index.html

Skarns and Skarn Deposits  
   Skarns are a rich source of metallic ores. This web site is an attempt to coordinate research and interest in skarns.
   http://www.wsu.edu:8080/~meinert/skarnHP.html

Tantalite Project in Namibia and South Africa  
   Geological report on a pegmatite ore body situated in Namibia and South Africa including information on tantalum, niobium, beryl, lithium, and other resources.
   http://www.afb-exploration.com/default.htm

Ore Deposits  
   Detailed lecture notes from David Jessey's course at Cal State Pomona. Topics include morphology, ore textures, geothermometry, theories of genesis, ore deposit classification, and various specific types of deposits.
   http://geology.csupomona.edu/drjessey/class/orenote.htm

Reed Laboratories  
   Assayer services for gold, silver, and other metals, primarily for mineral prospecting and exploration.
   http://home.nethere.net/rely/