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2. 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]

3. Big Gold Belt - Wikipedia

   en.wikipedia.org/wiki/Big_Gold_Belt

   The Big Gold Belt is a historic professional wrestling championship belt that has represented titles in multiple promotions throughout its history. Originally designed in 1985 by silversmith Charles Crumrine and commissioned by Jim Crockett Promotions for NWA World Heavyweight Champion Ric Flair , the championship belt has three large gold ...

4. Iron oxide copper gold ore deposits - Wikipedia

   en.wikipedia.org/wiki/Iron_oxide_copper_gold_ore...

   The gold contents of all deposits averages 0.41 g/t Au, with the majority of worldwide deposits averaging less than 1 g/t Au. [2] The occurrence of native gold mineralization. Example from Kalgoorlie Australia. The contents of gold can appear in three different forms in these deposits: [2] Native gold; Electrum; Gold–bismuth–antimony ...

5. Mother lode - Wikipedia

   en.wikipedia.org/wiki/Mother_lode

   The zone contains hundreds of mines and prospects, including some of the best-known historic mines of the gold-rush era. Individual gold deposits within the Mother Lode are gold-bearing quartz veins up to 15 metres (49 ft) thick and a few thousand feet long. The California Mother Lode was one of the most productive gold-producing districts in ...

6. Ore genesis - Wikipedia

   en.wikipedia.org/wiki/Ore_genesis

   High-grade gold ore from the Harvard Mine, Jamestown, California, a wide quartz-gold vein in California's Mother Lode. Specimen is 3.2 cm (1.3 in) wide. Various theories of ore genesis explain how the various types of mineral deposits form within Earth's crust. Ore-genesis theories vary depending on the mineral or commodity examined.

7. Belt Supergroup - Wikipedia

   en.wikipedia.org/wiki/Belt_Supergroup

   The Belt Supergroup is an assemblage of primarily fine-grained sedimentary rocks and mafic intrusive rocks of late Precambrian (Mesoproterozoic) age. It is more than 15 kilometres (10 mi) thick, covers an area of some 200,000 km 2 (77,220 sq. mi), and is considered to be one of the world's best-exposed and most accessible sequences of ...