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2. Talent (measurement) - Wikipedia

   en.wikipedia.org/wiki/Talent_(measurement)

   In Homer's poems, it is always used of gold and is thought to have been quite a small weight of about 8.5 grams (0.30 oz), approximately the same as the later gold stater coin or Persian daric. In later times in Greece, it represented a much larger weight, approximately 3,000 times as much: an Attic talent was approximately 26.0 kilograms (57 ...

3. Guinea (coin) - Wikipedia

   en.wikipedia.org/wiki/Guinea_(coin)

   The first guinea was produced on 6 February 1663 (361 years ago) (); a proclamation of 27 March 1663 made the coins legal currency.One troy pound of 11 ⁄ 12 (0.9133) [citation needed] fine gold (22 carat or 0.9167 pure by weight) would make 44 + 1 ⁄ 2 guineas, [5] each thus theoretically weighing 129.438 grains (8.385 grams crown gold, 7.688 grams fine gold, or 0.247191011 ozt (troy ounces ...

4. Olympic medal - Wikipedia

   en.wikipedia.org/wiki/Olympic_medal

   First place (the gold medal): It is composed at least 92.5% of silver, plated with 6 grams of gold; the metal value was about US$494 in 2010. [19] [20] At the 2020 Summer Olympics held in 2021 in Tokyo, Japan, the medal at then-current prices was worth about $800. [21]

5. GOLD - Wikipedia

   en.wikipedia.org/wiki/GOLD

   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

6. Gold cyanidation - Wikipedia

   en.wikipedia.org/wiki/Gold_cyanidation

   The chemical reaction for the dissolution of gold, the "Elsner equation", follows: 4 Au + 8 NaCN + O 2 + 2 H 2 O → 4 Na[Au(CN) 2] + 4 NaOH. Potassium cyanide and calcium cyanide are sometimes used in place of sodium cyanide. Gold is one of the few metals that dissolves in the presence of cyanide ions and oxygen.

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