SUBSCRIBESUBSCRIBESUBSCRIBEHomeHistory & SocietyScience & TechBiographiesAnimals & NatureGeography & TravelArts & CultureProConMoneyGames & QuizzesVideosOn This DayOne Good FactDictionaryNew ArticlesHistory & SocietyLifestyles & Social IssuesPhilosophy & ReligionPolitics, Law & GovernmentWorld HistoryScience & TechHealth & MedicineScienceTechnologyBiographiesBrowse BiographiesAnimals & NatureBirds, Reptiles & Other VertebratesEnvironmentFossils & Geologic TimeInsects & Other InvertebratesMammalsPlantsGeography & TravelGeography & TravelArts & CultureEntertainment & Pop CultureLiteratureSports & RecreationVisual ArtsImage GalleriesPodcastsSummariesTop QuestionsLists and StoriesBritannica KidsAsk the ChatbotGames & QuizzesHistory & SocietyScience & TechBiographiesAnimals & NatureGeography & TravelArts & CultureProConMoneyVideosgold processingIntroductionHistoryOresMining and concentratingExtraction and refiningAmalgamationCyanidationExtraction from refractory oresRefiningRefining from scrapAssayingThe metal and its alloysChemical compoundsReferences & Edit HistoryRelated TopicsImages & VideosTechnologyIndustryFacebookXhttps://www.britannica.com/technology/gold-processingJames Edward Hoffmann
President, Jan H. Reimers and Associates USA Co. (metallurgical consulting engineers), Houston, Texas. Coeditor of the proceedings of The Reinhardt Schumann International Symposium...Britannica Editors
Encyclopaedia Britannica's editors oversee subject areas in which they have extensive knowledge, whether from years of experience gained by working on that content or via study for an advanced degree....Historygoldelectronic structureelectromagnetic radiationcompoundshydrochloric acidamenableplacer miningcrystal structureEgyptMesopotamiaBlack SeaIberian PeninsuladenseamalgamationUral MountainsSouth AfricavaluesMillerâs processWohlwillâsOresexogeneticendogeneticstreambedsSUBSCRIBE
Endogenetic gold ores include vein and lode deposits of elemental gold in quartzite or mixtures of quartzite and various iron sulfide minerals, particularly pyrite (FeS2) and pyrrhotite (Fe1-xS). When present in sulfide ore bodies, the gold, although still elemental in form, is so finely disseminatedElectrumalloysulfide mineralSir Ernest Oppenheimergoldmaterials processingSee all related contentUnited States
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