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Mineral Deposits

Articles on specific mineral deposits and regions as well as important mineral deposits types.

  • The Kidd Mine near Timmins, Ontario

    The World-Class Abitibi Greenstone Belt of Canada

    Overview Several of the world’s largest gold and base metal deposits are found in eastern Canada’s Abitibi greenstone belt (AGB). The term world-class can sometimes be overused, but the AGB really earns the title, hosting 11 gold deposits over 100 tonnes, ...

  • Spectacular gold ore sample from the Red Lake greenstone belt, Ontario, Canada

    Old Gold: An Introduction to Archean Greenstone Belts

    Overview Two of the world’s most important gold districts are found in Archean greenstone belts: the Yilgarn Craton in Western Australia and the southern Superior Province of eastern Canada. Many of the richest gold deposits in the world, including Karloor...

  • A garnet-pyroxene-molybdenite-scheelite skarn. Scheelite is a primary ore of tungsten.

    Skarn Deposits – Our Largest Source of Tungsten

    Skarn vs. skarn deposit Skarn is a relatively simple rock type formed when a magma body intrudes into carbonate sedimentary rocks such as limestone or dolomite. At the contact between the two rock types, a collection of course-grained calc-silicate mineral...

  • Reed Gold Mine in Midland, North Carolina.

    John Reed’s Doorstop: America’s First Gold Rush was Not in California

    Most people have heard of the 49ers and the California Gold Rush. Not nearly as many people are aware that there was an American Gold Rush before the 49ers. This rush took place in the Southeastern US primarily in the states of North and South Carolina and...

  • Outcropping of the Bushveld LG6 chromitite seam.

    Layered Mafic Intrusions: Our Largest Source of Platinum & Palladium

    Overview Most of the world’s economic deposits of platinum group elements (PGE) including platinum, palladium, rhodium and other rare metals come from layered mafic intrusions (LMI), a rare sequence of rocks formed when repeated bursts of magma cool slowly...