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Smithsonian December 2006 Cate Lineberry |
Diamonds Unearthed In the first installment of a multi-part series, Smithsonian diamond expert Jeffrey Post, curator of the National Gem and Mineral Collection, explains how the rare crystals form. |
Chemistry World December 4, 2013 James Urquhart |
Diamonds' redox reaction origins revealed Subduction zones -- boundaries between tectonic plates where the Earth's crust sinks into the hot mantle -- could be breeding grounds for diamond formation, according to Russian researchers. |
Chemistry World July 22, 2011 David Bradley |
Cracking diamonds reveals continental origins An analysis of the mineral inclusions in diamonds dredged up by eruptions from deep within the Earth has allowed scientists to get a handle on when the process of plate tectonics began. |
Geotimes September 2005 Sara Pratt |
Sourcing Ultradeep Diamonds Mineral impurities in a diamond may decrease the gem's value for jewelers, but for geologists they can prove to be priceless: South African diamonds containing garnet have recently provided evidence that very deep diamonds can form from surface materials. |
Geotimes November 2006 Kathryn Hansen |
Canada's Diamonds Face Old Age Geologists are uncovering the unique origins of Canadian diamonds, and finding not only that they are surprisingly old, but also that they have implications for the timing of Earth's early tectonic processes. |
Geotimes June 2005 Naomi Lubick |
Double-Crossing the Core A team of scientists has taken the properties of a mineral from the Earth's lower mantle, together with seismic observations of the core-mantle boundary, to propose a new model that could elucidate the heat engine that drives Earth. |
Geotimes March 2007 Kathryn Hansen |
Black Diamonds Have E.T. Origins Carbonado, or black, diamonds look more like basalt than their traditional colorless counterparts. New research indicates that carbonado diamonds might have formed in space. |
Geotimes May 2007 Kathryn Hansen |
Deep Earth May Hold an Ocean Earth's deep interior, more than 1,000 kilometers below the surface in the mantle, could prove to be a watery place. That's the conclusion researchers drew from an anomaly uncovered by the first global map of Earth's lower mantle, using a new type of seismic analysis. |
Chemistry World July 30, 2009 James Urquhart |
Water linked to mantle oxidation US scientists have used an emerging technique to analyse minuscule samples of magma derived from the Earth's mantle in different tectonic environments and discovered a direct link between water content and the oxidation state of iron within the sample. |
Geotimes July 2006 Carolyn Gramling |
Earth Soaks up Seawater Geologists have long thought that seawater does not travel very far through Earth's interior A new geochemical study, however, is challenging that notion, saying that traces of seawater exist deep inside the planet. |
IEEE Spectrum April 2008 John Boyd |
Electromagnetic Link Deep in the Earth Varies the Length of the Day Scientists find that 2600 kilometers down, the Earth is electrically conductive. The mineral responsible could point the way to new superconductors. |
Smithsonian January 2007 Cate Lineberry |
Diamonds Unearthed In part two of this series, Smithsonian diamond expert Jeffrey Post, curator of the National Gem and Mineral Collection, discusses conflict diamonds, colored diamonds and synthetic gems grown in the lab |
Geotimes July 2004 Sara Pratt |
Core Compositions Scientists are working to explain the differences in composition between Earth and Mars. |
Geotimes July 2006 Carolyn Gramling |
Afar From Close-up Powerful stresses in the crust lead to frequent earthquakes and volcanism in the Afar Depression of northeastern Ethiopia. Researchers now say that the source of this activity reveals a possible new connection in Earth's interior. |
Chemistry World October 11, 2012 Andy Extance |
Perovskite posits answer to xenon riddle If meteorites and the Earth were formed from similar materials at the same time, where did the xenon go? Some scientists think that the answer could be found in xenon trapped in the Earth's iron core, or in ice, water or rocks near the surface. |
Chemistry World April 6, 2011 Mike Brown |
Mars chemistry reveals how red planet cooled The chemistry of volcanic rock on Mars offers a picture of the thermal history of the planet, according to scientists in France. The findings could provide a reference point for the evolution of other planets, they say. |
Geotimes June 2007 Hansen & Gramling |
Are Volcanoes Picky Eaters? New measurements of the concentrations of elements within magma suggest a volcano's food may be a complex recipe -- and that what kind of magma a volcano prefers may affect its physical features, including the size to which it can grow, according to new research |
Chemistry World May 13, 2014 Tim Wogan |
Chemistry calculations reveal Earth's inner core Theoretical calculations have confirmed that the Earth's core contains a significant proportion of oxygen. |
Geotimes September 2003 Sara Pratt |
Zircons reveal mantle evolution A team of Finnish geologists has discovered 3.1 billion-year-old zircons in the Jormua ophiolite of eastern Finland. Although not the oldest zircons on Earth, the Jormua zircons are the oldest yet found in mantle rocks. Their discovery has given scientists a brief glimpse into the history of early plate tectonics. |
Geotimes July 2007 Carolyn Gramling |
X-ray Eyes in the Sky Scientists are working on the next generation of low-orbiting satellites that they hope will see far past the Earth's surface and into its interior, to better understand the structure and composition of Earth's crust, mantle and core. |
Geotimes November 2007 Carolyn Gramling |
How Does Your Continent Grow? Data from ancient mantle rocks are helping to shore up the hypothesis that the continental crust was extracted in pulses, during periodic large melting events in the mantle. |
Geotimes July 2007 Megan Sever et al. |
News Notes - Energy & Resources A blight on ethanol... Finding diamonds in your backyard?... Mineral Resource of the Month: Talc... |
Chemistry World June 26, 2015 Andrea Sella |
Van Valkenberg's anvil Alvin van Valkenberg, the American geochemist and gemmologist (1913 -- 1991), was the inventor of the diamond anvil cell |
Geotimes July 2004 Megan Sever |
Next Best Friend: Cultured Diamonds Conventional thinking about diamonds may soon be changing. Diamonds -- long prized for their beauty, rarity and long generation times -- are now being created in a matter of hours in laboratories. |
Chemistry World May 28, 2014 Ian Randall |
Earth's earliest continent formed like Iceland The Earth's first continents may have formed in a geological setting similar to modern-day Iceland, according to the geochemical analysis of a newly discovered rock unit from Canada. |
Geotimes January 2004 Sara Pratt |
Green minerals on the Red Planet Contrary to the prevailing idea that Mars once sustained a warm, wet climate similar to Earth's, new evidence shows that the planet may have been dry and cold for much of its history. |
Chemistry World July 27, 2009 James Urquhart |
From methane to liquid gold The world's supplies of oil may be larger than we think - or at least that is what researchers from the US, Russia and Sweden are speculating now they have shown that hydrocarbons can be formed in the mantle from methane. |
Geotimes January 2007 Nicole Branan |
Heat Flow Causes Magnetic Reversals Earth's magnetic field has done hundreds of somersaults over the last few billion years. A new study sheds some light on what causes the geomagnetic field to flip. |
Science News March 17, 2001 |
TimeLine: March 14, 1931 70 Years Ago in Science News: New Welded Pipe Line Carries Water to San Diego... Age of Earth Determined as Over 2,000,000,000 Years... Moon Lacks Oxygen, Its Light Proves... |
Geotimes May 2003 Lisa M. Pinsker |
Molten martian core The more researchers study Mars, the more similarities they seem to find between the Red Planet and Earth. The latest parallels come from the planet's enigmatic interior. |
Geotimes July 2003 Lisa M. Pinsker |
Challenging core ideas Earth's core has never been so popular -- first plastered over billboards to advertise the recent movie The Core, and now in press worldwide discussing David Stevenson's "modest proposal" to send a grapefruit-sized probe thousands of kilometers into the planet's mysterious core. |
Wired September 2003 Joshua Davis |
The New Diamond Age Armed with new processes to manufacture inexpensive, mass-produced gems, two startups are launching an assault on the De Beers cartel. Next up: the computing industry. |
Chemistry World May 11, 2006 Jon Evans |
Sea Water Assumes the Xenon Mantle Geochemists have uncovered evidence that sea water incorporates noble gases into the Earth's mantle, overturning current theories of how noble gases are transported beneath the crust. |
Chemistry World September 2011 |
Diamonds are for everything No longer valued simply for its glamour and durability, diamond is turning its hand to applications in solar power, laser design and bionic eyes. |
Geotimes September 2006 Carolyn Gramling |
Donald Forsyth: At Play in the Field Forsyth emphasizes that collaborating with students and other researchers is not only important to solving tough geological puzzles, but also is much of the fun. |
Chemistry World June 11, 2014 Emma Stoye |
Toughest ever diamond made from carbon onions A synthetic diamond that is even harder than its natural counterpart and able to withstand even hotter temperatures has been made by researchers in China. |
Popular Mechanics December 16, 2008 Matthew Hutson |
5 Projects Ask if Life on Earth Began as Alien Life in Space For years, scientists have considered the possibility of exogenesis, the idea that life arrived on Earth from another planet, and not just the building blocks of life, but organisms that were ready to rock and roll when they arrived. |
Geotimes October 2006 Carolyn Gramling |
Flexing Plates Produce Volcanoes There's a new kind of volcano in town, according to a new study. |
Entrepreneur March 2006 Sara Wilson |
Cutting Edge A diamond manufacturer is crafting new uses for an age-old treasure. |
Geotimes February 2004 Naomi Lubick |
Pursuing plumes Geophysicists recently presented improved methods for imaging mantle plumes, providing the strongest evidence yet that some plumes extend all the way down to the coremantle boundary. |
The Motley Fool January 17, 2007 Jack Uldrich |
Nanotech Is a Girl's Best Friend The look, quality and price of "cultured" diamonds will eventually win over consumers. When it does, that will be bad news for DeBeers and other diamond companies and good news for Apollo and Gemesis. |
Wired December 2004 Erika Check |
Mysteries of the Deep The top 15 places to explore beneath the sea. |
Entrepreneur June 2006 Steve Cooper |
Hard to Beat With so many commercial uses, could diamonds be the new plastic? |
Chemistry World November 29, 2010 Simon Hadlington |
Mystery of diamond polishing solved? Mike Ashfold, an expert on the chemistry of diamond at the University of Bristol in the UK, says, 'Polishers have long recognised that some diamond surfaces polish more easily, and more successfully, than others. |
AskMen.com James Matheson |
Q&A On Diamonds To make the dreaded task of buying diamonds easier on men, I've compiled a list of common questions and concerns men have about buying diamonds for their special ladies. |
The Motley Fool April 19, 2011 Travis Hoium |
Molycorp Goes Vertical Molycorp is buying companies that add downstream value to its rare earth mine. |
The Motley Fool December 13, 2011 Travis Hoium |
Molycorp: A Look Back at 2011 Molycorp was hot to start the year, but it ends 2011 leaving many questions unanswered. |
Geotimes October 2006 |
Geomedia Inspecting the Diamond Industry: Q&A with The Heartless Stone Author Tom Zoellner... Book Review: Weighing the World by Edwin Danson... etc. |
The Motley Fool December 21, 2006 Sarah Erdreich |
All That Sparkles ... If you're considering buying diamond jewelry and want to make sure you're not inadvertently supporting the conflict diamond trade, there are several steps that consumers can take. |
Salon.com September 27, 2000 Susan Emerling |
Not forever The death of South African diamond magnate Harry Oppenheimer last month might mark the end of global domination for one of the world's most infamous cartels. |