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273:" by miners. They were, more accurately, doré bars with higher contents of silver and other adulterants than the mints would accept. Mint and private
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would subsequently refine the doré bars to an acceptable purity, 999 fine, gold bullion, with the silver and base metals removed. By the time of the
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During the 19th century gold rushes, gold nuggets and dust were melted into crude gold bars mistakenly called "
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Code 212221), or "Primary
Smelting and Refining of Nonferrous Metal (except Copper and Aluminum)" (
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The proportions of silver and gold can vary widely. Doré bars weigh as much as 25 kg.
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Ore
Processing from mine to Doré production, from Newmont Waihi
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481:"Doré - Dictionnaire Français-Anglais WordReference.com"
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445:"2002 NAICS Definitions: 212221 Gold Ore Mining"
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50:Learn how and when to remove these messages
519:Photograph of a doré bar weighing 17.42 kg
397:Metallurgy of Gold, Silver, Lead and Zinc
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227:Learn how and when to remove this message
209:Learn how and when to remove this message
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293:for the French mint. By the time of the
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279:California gold rush
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420:"US Census Bureau"
295:Klondike gold rush
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509:Doré Bullion
489:. Retrieved
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539:Gold mining
371:Ore genesis
366:Gold mining
283:cupellation
191:introducing
533:Categories
491:2007-01-02
429:5 December
424:Census.gov
382:References
199:April 2009
174:references
107:newspapers
96:"Doré bar"
36:improve it
325:The word
42:talk page
376:Smelting
356:Gold bar
351:Electrum
335:See also
275:assayers
257:refinery
241:doré bar
404:3 April
341:Bullion
271:bullion
187:improve
121:scholar
253:silver
176:, but
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315:NAICS
311:NAICS
245:alloy
128:JSTOR
114:books
431:2018
406:2020
328:doré
287:part
285:to "
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