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Gold occurs principally as a native metal, i.e., gold itself.Sometimes it is alloyed to a greater or lesser extent with silver, which is called electrum.Native gold can occur as sizeable nuggets, as fine grains or flakes in alluvial deposits, or as grains or microscopic particles (known as colour) embedded in rock minerals.
Tales of prospecting for gold may conjure up images of treasure hunters victoriously uncovering massive rocks of the valuable metal. In reality, prospecting was hard, back-breaking work, with days ...
Ternary plot of different colors of Ag–Au–Cu alloys. Colored gold is the name given to any gold that has been treated using techniques to change its natural color. Pure gold is slightly reddish yellow in color, [1] but colored gold can come in a variety of different colors by alloying it with different elements.
Gold mining is the extraction of gold by mining. Historically, mining gold from alluvial deposits used manual separation processes, such as gold panning. The expansion of gold mining to ores that are not on the surface has led to more complex extraction processes such as pit mining and gold cyanidation. In the 20th and 21st centuries, most ...
Until 2006, South Africa was the world's largest gold producer. In 2007, increasing production from other countries and declining production from South Africa meant that China became the largest producer, although no country has approached the scale of South Africa's period of peak production during the late 1960s and early 1970s.
While physical gold can be a safer investment than stocks or ETFs, you’ll pay more for the bullion or coins than the raw gold content is worth. In addition, capital gains from the sale of ...
Wall Street analysts expect gold's rally to keep going in 2025 after the precious metal saw its biggest annual jump in 14 years. On Thursday, gold futures jumped more than 1% to hover above $2,670 ...
Gold, a chemical element; Genomes OnLine Database; Global-scale Observations of the Limb and Disk, a NASA Explorer Mission of Opportunity; GOLD (parser), an open-source parser-generator of BNF-based grammars; Graduates of the Last Decade, an Institute of Electrical and Electronics Engineers program to garner more university level student members