This Is The World’s Rarest Form Of Gold. New Clues Are Revealing Why
“What they’ve done is fantastic, and no doubt they’re going to go flesh this out some more,” says James Hagadorn, who is curator of geology at the Denver Museum of Nature and Science, which hosts other wire gold samples from Colorado’s Ground Hog mine. For wire gold, the researchers also looked for the absorbed neutrons, which revealed another surprise: both samples are actually gold alloys that include up to 30 percent silver. For that work, Rakovan and a different team of researchers grew synthetic wire silver from silver sulfide to tease apart how they form.
Source: www.nationalgeographic.com