HOME >> BIOLOGY >> NEWS
'Gold Bug' sheds light on how some gold deposits formed

AMHERST, Mass. - For centuries, scientists have wondered why gold is found in two forms - as a solid in deposits close to the Earth's crust, and in solution, often far removed from gold-ore deposits. A fairly simple lab experiment conducted at the University of Massachusetts may lead to an understanding of how the precious metal came to be available in disparate forms, and how some gold-ore deposits might have been formed.

In research related to pollution clean-up, a team of UMass microbiologists led by noted researcher Derek Lovley has extracted gold solids from water containing dissolved gold. The work uses technology Lovley developed 10 years ago to clean up heavily polluted water and soil around the U.S. using bacteria and archaea, or ancient micro-organisms, to break down heavy metals in affected environments.

Like uranium, cadmium, and other heavy metals, gold is precious and useful to humans. Lovley notes that dissolved gold, however, is useless because it can't be manipulated and formed into objects of value or beauty. He says when either solid or liquid gold is ingested, it is toxic to most life forms. On the other hand, liquid gold and many other heavy metals are not toxic to a group of microbes called extremophiles, or simple life forms known to thrive in environments where others cannot live.

With this in mind, the UMass researchers asked if extremophiles might have ingested the liquid gold found in hydrothermal vents, hot springs, and other hot places, and left it scattered as deposits of solid gold in places that now are below the surface of the Earth. This would explain how the metal came to be in two different forms in very different environments. If that is the case, the team wondered if microbes could duplicate the process in the laboratory and extract valuable solids from liquid containing dissolved gold.

"A vast number of bacteria and archaea have the ability to transfer electrons to iron throug
'"/>

Contact: Paula Hartman Cohen
phcohen@admin.umass.edu
413-545-2987
University of Massachusetts at Amherst
7-Aug-2001


Page: 1 2 3

Related biology news :

1. New fossil sheds light on old mystery
2. Fossil genes reveal how life sheds form and function
3. OHSU-VAMC study sheds light on estrogens benefit for MS
4. Ovarian cancer sheds tumor suppression with loss of estrogen receptor
5. Study sheds new light on genetic risk for Parkinsons disease
6. Equine clonings triple play sheds light on calcium, cell signaling, human disease
7. UCLA study sheds new light on island evolution
8. Research sheds new light on evolution
9. Better model of cancer development sheds light on potential angiogenesis target
10. Media advisory - wildland fire impacts on watersheds
11. Enzyme discovery sheds light on causes of rare disease, cancer

Post Your Comments:
*Name:
*Comment:
*Email:
TAG: Gold Bug sheds light how some gold deposits formed

(Date:12/22/2014)... Dec. 22, 2014 Research and Markets ... the "The Global Watermarking and Fingerprinting Markets" ... http://photos.prnewswire.com/prnh/20130307/600769 This insight ... watermarking and fingerprinting markets. Watermarking aims to control ...
(Date:12/19/2014)... 18, 2014   LaunchKey , the first decentralized mobile ... Internet of Things era, today announced the close of ... was led by Metamorphic Ventures with participation from ENIAC ... and others.  LaunchKey has raised $4 million to date, ...
(Date:12/17/2014)... Dec. 16, 2014 Research and Markets ( ... "Global Chemical Sensor Market 2015-2019" report to their ... One major trend upcoming in this market is ... Chemical sensors help in recording of patient data for ...
Breaking Biology News(10 mins):The Global Watermarking and Fingerprinting Markets 2LaunchKey Raises $3 Million in Additional Funding Led by Metamorphic Ventures 2LaunchKey Raises $3 Million in Additional Funding Led by Metamorphic Ventures 3Global Chemical Sensor Market 2015-2019: Key Vendors are Abbott Laboratories, Bayer, Hoffmann La-Roche, Johnson & Johnson, NGK Spark Plugs and Robert Bosch 2
(Date:1/22/2015)... Bedford, NH (PRWEB) January 22, 2015 ... offers a table top laboratory homogenizer, the PandaPLUS 2000, ... nanoparticles, nanodispersions, nanoemulsions , and cell disruption . ... processing dairy products, fruit juices, liquid food, food additives ...
(Date:1/22/2015)... January 22, 2015 Protocol Networks brings ... growing team of brand-neutral, independent consultants, Protocol Networks has ... explained that over the years, his company has attracted ... Town of Plainfield, as well as others. With the ...
(Date:1/22/2015)... Dr. Greg Leyer of UAS Labs recently was ... Pre-Conference seminar on probiotics in San Diego, CA. , ... conference for health care professionals. This year’s pre-conference seminar was ... in health. Dr. Leyer spoke about the emerging topics and ...
(Date:1/22/2015)... Jersey , 22 de enero de 2015  El Dr. ... hoy su llamada a nominaciones para 2015. Este prestigioso ... hecho, o tiene el potencial para hacer, contribuciones destacadas ... se aceptarán hasta el 15 de marzo de 2015 ...
Breaking Biology Technology:GEA Niro Soavi Announces the PandaPLUS 2000 Homogenizer for Processing New Applications for Nanoemulsions and Cell Disruption 2Protocol Networks Brings Independent Technology Consulting to the Constitution State 2El Dr. Paul Janssen Award for Biomedical Research emite su llamada a los nominados para 2015 2El Dr. Paul Janssen Award for Biomedical Research emite su llamada a los nominados para 2015 3El Dr. Paul Janssen Award for Biomedical Research emite su llamada a los nominados para 2015 4
Cached News: