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Gold


— Science

"Gold leaf" trees discovered in the Australian outback

By - October 23, 2013 3 Pictures
Scientists from Australia's Commonwealth Scientific and Industrial Research Organisation have discovered that eucalyptus trees in the Australian outback are drawing up gold particles from deep underground through their root system and depositing the precious metal in their leaves and branches. Rather than being a new source of "gold leaf," the discovery could provide a cheaper, more environmentally friendly way to uncover valuable gold ore deposits. Read More
— Science

Eureka! X-rays detect gold faster and more accurately

By - August 13, 2013 2 Pictures
Every year, Australian mining companies discard hundred of millions of dollars worth of gold. They're not doing it on purpose, it’s just that the standard industry technique of scanning mineral samples isn’t sensitive enough to detect small traces of the precious metal. Australia’s Commonwealth Scientific and Industrial Research Organisation (CSIRO) and Canadian company Mevex have tested a new technique using powerful X-rays that can detect these small trace amounts quickly and accurately. Read More
— Environment

Non-toxic corn starch could replace cyanide in gold mines

By - May 14, 2013 1 Picture
In the gold-mining process, the precious metal is often extracted from low-grade ore in a technique known as gold cyanidation. As its name suggests, the process utilizes highly-poisonous cyanide, some of which ends up entering the environment in the mines’ tailings. That’s not so good. Scientists at Illinois’ Northwestern University, however, recently announced their discovery of a new gold recovery process that’s based on a non-toxic component of corn starch. Read More
— Health and Wellbeing

Gold nanoparticle could allow powerful alpha particles to join cancer fight

By - February 6, 2013 1 Picture
Gold nanoparticles have already shown promise in precisely highlighting brain tumors, “blowing up” individual diseased cells, and developing a lung cancer breath test. Now researchers have created gold nanoparticles that allow an alpha particle-emitting element to be directed to small cancer tumors. The researchers say the gold coating keeps the powerful radioactive particles in place at the cancer site so they do negligible damage to healthy organs and tissue. Read More
— Science

Art and science combine to turn gold chloride into nuggets

By - October 10, 2012 11 Pictures
For centuries, the world's great thinkers were consumed by the search for the mythical Philosopher's Stone. Franciscan friar Roger Bacon is said to have penned a formula for its creation in the 13th century, legend would have us believe that German friar Albertus Magnus actually found a substance capable of transmuting base metals into gold or silver, and English scientist and mathematician Isaac Newton was a known devotee of the magnum opus. Researchers at Michigan State University (MSU) have put a microbial spin on the ancient quest by creating a bioreactor that forces bacteria to transform a toxic liquid that, as team member Kazem Kashefi says, "has no value into a solid, precious metal that’s valuable." Read More
— Around The Home

GoVacuum's US$1 million gold-plated vacuum cleaner

By - July 5, 2012 2 Pictures
Every now and then, we here at Gizmag like to take a look at how the other half (or one percent) live. And why not? It's nice to occasionally fantasize about say, waking up in a private, underwater hotel room, to be chauffeured in a Mercedes-Benz to a weekend getaway on your own personal floating island. But does that fantasy involve personalized, gold-plated cleaning appliances? If it didn't before, it sure can now with GoVacuum's GV62711 vacuum cleaner and it's US$1 million price tag. Read More
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