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Mercury has a liquid core, and other new surprises from the innermost planet
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NASA's Messenger spacecraft entered orbit around Mercury one year ago, and the spacecraft has been hard at work. It has captured nearly 100,000 images, mapped Mercury's gravity field, and taken sensitive altimetry measurements that are shedding light on the planet's surface features like never before. Scientists on the Messenger mission published another round of new findings about the innermost planet, which turns out to be an altogether weirder world than we'd thought. More

 Society News

Geochemical News editors
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The Geochemical Society is pleased to announce the inaugural editorial board for the Geochemical News. The GN editors board consists of Martin Elsner, Shuhei Ono, Lesley Warren and Helen Williams. Please contact the editors at if you have announcements and/or news items of interest to the geochemical community that you would like to have posted in the Geochemical News.

Goldschmidt 2012 registration reminder
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All presenters at the 22nd V.M. Goldschmidt Conference in Montreal are required to register and pay the conference registration fee no later than April 20, 2012, in order to be included in the program and to present on site. Any accepted abstracts that do not have the accompanying registration and payment of registration fee by this date will be withdrawn. More

Software for the Water Planet

Diagrams, reactions, kinetics, microbes, and reactive transport in one package. The standard in geochemical modeling since 1991. Download new release now for early adopter pricing.

New in GCA (Volume 83, 15 April 2012)
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An experimental study of high temperature potassic alteration

As(III) immobilization on gibbsite: Investigation of the complexation mechanism by combining EXAFS analyses and DFT calculations

Fate of microbial nitrogen, carbon, hydrolysable amino acids, monosaccharides, and fatty acids in sediment

Oxygen and sulfur isotope fractionation during sulfide oxidation by anoxygenic phototrophic bacteria

Pharmacokinetic modelling of multi-decadal luminescence time series in coral skeletons

Siderophile trace elements in metals and sulfides in enstatite achondrites record planetary differentiation in an enstatite chondritic parent body

Identifying and tracking proteins through the marine water column: Insights into the inputs and preservation mechanisms of protein in sediments

Stability of free and mineral-protected nucleic acids: Implications for the RNA world

Oxidative dissolution of pyrite surfaces by hexavalent chromium: Surface site saturation and surface renewal

 Latest News

AGI announces the release of the Directory of Geoscience Departments
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The American Geosciences Institute (AGI) is pleased to announce that the new edition of its cornerstone reference, The Directory of Geoscience Departments, has just been published. The new 47th edition is currently available as an e-book for the Kindle, iBookstore, and Nook, and will be available in print directly from AGI or through starting April 2, 2012. More

Geochemistry: Bubbles from the deep

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A study suggests that hydrocarbons released from sedimentary basins formed part of a climatic feedback mechanism that exacerbated global warming during the Eocene epoch. More

First geological map of Jupiter's moon Io is created
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For the first time, scientists have created a global geologic map of Jupiter's moon Io, the most volcanically active object in the solar system. The map, which was published by the U.S. Geological Survey (USGS), shines a light on Io, the fourth-largest satellite in the solar system. Scientists hope the new tool will help them better understand the exotic moon, which boasts volcanic activity 25 times that of Earth. More

Further doubts cast over lunar formation models
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An international team of researchers claims that nearly all of the material that makes up the Moon came from the early Earth. These findings contradict astronomical models of the formation of the Moon by the impact of a Mars-sized object with the early Earth that suggests more than 40 percent of the Moon-forming material came from the Mars-sized impactor known as "Theia". More

"New" Mexican volcano caused by the Oaxaca earthquake? Not likely.
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After the recent earthquake in Mexico, there has been a flurry of news in Mexico about a supposed "new volcano" that appeared between Huajintepec and Huixtepec municipality of Ometepec. The details are scant, but the mayor of the district claims the new volcano to be "tiny" (but in other articles, he says the "volcano" has been there "for many years"). As usual, there is a lot of misleading coverage, like this story that shows a picture of an undersea vent at NW Rota 1 in the Marianas Islands (with no caption to say so). There is also a lot of speculation in the Mexican media that the "new volcano" might somehow have caused the earthquake or all the aftershocks being felt in the region. More

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