Ore formation refers to the set of geological processes that concentrate economically valuable metals and minerals into ore deposits at grades significantly above average crustal abundance. It encompasses magmatic, hydrothermal, sedimentary, metamorphic, and weathering-related mechanisms that mobilize, transport, and precipitate metals in response to changes in temperature, pressure, redox state, fluid composition, and structural permeability. Key processes include magmatic segregation, hydrothermal fluid circulation and vein formation, exhalative deposition on the seafloor, chemical precipitation in basins, and supergene enrichment. Understanding ore formation is central to mineral exploration, genetic deposit modeling, and quantitative assessment of resource potential in diverse tectonic environments.
Pyrite, an iron sulfide ore, is often known as fool's gold because its shiny metallic luster and pale brass-yellow color can easily fool the untrained eye into mistaking it for real gold. This time, however, 360 kilometers ...
How do some of geology's most mysterious iron ore deposits form? This question has preoccupied the geosciences for more than a century. An international research team led by Dr. Stefan Peters from the Leibniz Institute for ...
Earth Sciences
Jul 8, 2026
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A study led by geoscientists at the University of Sydney has revealed why some ancient continental edges became fertile sites for major mineral deposits, while others with apparently similar geology did not.
Earth Sciences
Jun 25, 2026
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Gold has long held a special place in Australia's history, shaping the nation's economic fortunes and driving waves of migration since the 1850s gold rushes. Today, Australia stands as one of the world's largest gold producers, ...
Earth Sciences
Jun 25, 2026
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We're used to a lot of different natural things falling out of the sky. These can include snow, rain and sometimes even frogs (yes, really). All of these relate to weather phenomena.
Planetary Sciences
Jun 10, 2026
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Scientists know that manganese, in its various oxide forms, plays a significant role in Earth's geochemical cycles. However, the exact forms of manganese, their abundance and the mechanisms behind these cycles that occur ...
A new atlas charts the global distribution of unusual, critical-metal-bearing igneous rocks, finding that they often form near the thick and ancient cores of the world's major continents. Researchers from Cambridge's Department ...
Earth Sciences
May 22, 2026
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New research from Adelaide University has revealed that geological processes dating back billions of years are critical to locating the rare earth elements needed for modern technologies and the global clean energy transition. ...
Earth Sciences
Apr 8, 2026
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Earth's "gold kitchen" lies deep beneath the seafloor. Island arcs, whose volcanoes form above subduction zones where one oceanic plate sinks beneath another, are often particularly rich in gold. The reasons for this have ...
Earth Sciences
Apr 1, 2026
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164
Idaho's Silver Valley has produced about 1.2 billion ounces of silver since the late 1800s, enough to cast a solid cube roughly as tall as a five-story building, along with huge amounts of lead and zinc. Now a new study led ...
Earth Sciences
Mar 19, 2026
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