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  2. Ore genesis - Wikipedia

    en.wikipedia.org/wiki/Ore_genesis

    Ore deposits formed by lateral secretion are formed by metamorphic reactions during shearing, which liberate mineral constituents such as quartz, sulfides, gold, carbonates, and oxides from deforming rocks, and focus these constituents into zones of reduced pressure or dilation such as faults. This may occur without much hydrothermal fluid flow ...

  3. Gold cycle - Wikipedia

    en.wikipedia.org/wiki/Gold_cycle

    Gold cycling starts with the microbial weathering of gold-bearing rocks and minerals which mobilizes gold in the environment via release of elemental gold and solubilization. [ 2 ] [ 3 ] The Witwatersrand gold deposits host approximately 30% of the world's gold resources, a large proportion of which is directly associated with organic carbon ...

  4. Orogenic gold deposit - Wikipedia

    en.wikipedia.org/wiki/Orogenic_gold_deposit

    A variety of gold deposits are formed in accretionary orogens, including orogenic gold deposits. [38] Orogenic gold deposits are typically located in metamorphosed fore-arc and back-arc regions, as well as in the arc [3] and show a close spatial relationship to lamprophyres and associated felsic porphyry dikes and sills. [39]

  5. Synthesis of precious metals - Wikipedia

    en.wikipedia.org/wiki/Synthesis_of_precious_metals

    If the fission occurs in an instant then the ruthenium thus formed will have an activity due to 103 Ru of 109 TBq g −1 and 106 Ru of 1.52 TBq g −1. 103 Ru has a half-life of about 39 days meaning that within 390 days it will have effectively decayed to the only stable isotope of rhodium, 103 Rh, well before any reprocessing is likely to occur.

  6. List of 2014 films based on actual events - Wikipedia

    en.wikipedia.org/wiki/List_of_2014_films_based...

    3 Mile Limit (2014) – New Zealand drama film based on the rise of Radio Hauraki [1]; 23 Blast (2014) – sports drama film inspired by the story of Travis Freeman, a Kentucky teen who loses his sight, but eventually overcomes the challenges of his disability, and continues to live his dream of playing football [2]

  7. Natural hydrogen - Wikipedia

    en.wikipedia.org/wiki/Natural_hydrogen

    Natural hydrogen (known as white hydrogen, geologic hydrogen, [1] geogenic hydrogen, [2] or gold hydrogen) is molecular hydrogen present on Earth that is formed by natural processes [3] [4] (as opposed to hydrogen produced in a laboratory or in industry).

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  9. How the Earth Was Made - Wikipedia

    en.wikipedia.org/wiki/How_the_Earth_Was_Made

    How the Earth Was Made is a documentary television series produced by Pioneer Productions for the History Channel.It began as a two-hour special exploring the geological history of Earth, airing on December 16, 2007.

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