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Prof. Jack Zussman speaking at the November 2013 launch of the 3rd edition of the 'Introduction to the Rock-Forming Minerals'

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GeoBlogy: Geochemistry brings societal benefits to sub-Saharan Africa

GeoBlogy: Geochemistry brings societal benefits to sub-Saharan Africa | Mineralogy, Geochemistry, Mineral Surfaces & Nanogeoscience | Scoop.it
Geochemistry brings societal benefits to sub-Saharan Africa... by Michael Watts | GeoBlogy - science from the core http://t.co/OZhMDY4sIa
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Hydrothermal influence on nearshore sediments of Kos Island, Aegean Sea

Hydrothermal influence on nearshore sediments of Kos Island, Aegean Sea | Mineralogy, Geochemistry, Mineral Surfaces & Nanogeoscience | Scoop.it
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The Kos-Nisyros volcanic centre is a long-active, Plio-Pleistocene magmatic system in the subduction zone along the easternmost edge of the active Hellenic volcanic arc in the Aegean Sea. Although today there are signs of relative quiescence in volcanic activity, active onshore fumaroles and shallow-sea hydrothermal vents persist on, amongst others, the island of Kos. The present study explores the large-scale imprint of hydrothermally sourced heavy metals and nutrients on the island’s coastal marine environment, based on geochemical data collected from hydrothermal waters and surficial nearshore sediments (<10 m water depth) at several vents in the Bros Thermi and Kephalos Bay hydrothermal fields.

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Apply For Doctoral Research Fellowship in Mineralogy at University of Oslo in Norway, 2015

Apply For Doctoral Research Fellowship in Mineralogy at University of Oslo in Norway, 2015 http://t.co/hkE8j8tFh8
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Iron toxicity for cyanobacteria delayed oxygen accumulation in early Earth's atmosphere

Iron toxicity for cyanobacteria delayed oxygen accumulation in early Earth's atmosphere | Mineralogy, Geochemistry, Mineral Surfaces & Nanogeoscience | Scoop.it
Geomicrobiologists say that the first oxygen-producing bacteria were poisoned by abundant iron in ancient oceans. Three billion years ago, Earth's atmosphere contained less than 0.0001 percent oxygen. Today's atmosphere has around 20 percent oxygen -- and that is due to the work of tiny microorganisms in Earth's primeval oceans.
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See also: http://www.nature.com/ngeo/journal/vaop/ncurrent/full/ngeo2327.html

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Iron and Arsenic Speciation in Arsenic-Enriched Peatland

Iron and Arsenic Speciation in Arsenic-Enriched Peatland | Mineralogy, Geochemistry, Mineral Surfaces & Nanogeoscience | Scoop.it
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The authors investigated the speciation and distribution of Fe and As in flocs collected from low-flow streams (pH 5.3–6.3) of the naturally As-enriched peatland Gola di Lago (Switzerland) using 57Fe Mössbauer spectroscopy and Synchrotron X-ray techniques.

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Stable Hg Isotope Signatures in Creek Sediments Impacted by a Former Hg Mine

Stable Hg Isotope Signatures in Creek Sediments Impacted by a Former Hg Mine | Mineralogy, Geochemistry, Mineral Surfaces & Nanogeoscience | Scoop.it
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The goal of this study was to investigate the Hg stable isotope signatures of sediments in San Carlos Creek downstream of the former Hg mine New Idria, CA, USA and to relate the results to previously studied Hg isotope signatures of unroasted ore waste and calcine materials in the mining area.

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3D model of meteorite on the Martian surface

3D model of meteorite on the Martian surface | Mineralogy, Geochemistry, Mineral Surfaces & Nanogeoscience | Scoop.it

Composition measurements by NASA's Mars Exploration Rover Opportunity confirm that this rock on the Martian surface is an iron-nickel meteorite. Researchers have informally named the rock "Block Island." With a width of about two-thirds of a meter (2 feet), it is the largest meteorite yet found on Mars.

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New instrument succeeds at XANES mapping of meteor impact melt bearing breccias

New instrument succeeds at XANES mapping of meteor impact melt bearing breccias | Mineralogy, Geochemistry, Mineral Surfaces & Nanogeoscience | Scoop.it

A recent collaboration with geologist Alaura Singleton, from Dr. Gordon Osinski’s research group at Western University in London Ontario (Canada), and CHESS scientists Matthew Ward, Arthur Woll, and Margaret Koker, has utilized the new CHESS Maia detector to perform full spectrum iron K-edge x-ray absorption mapping experiments on impact melt bearing breccias. Melt bearing breccia samples were taken from the Mistastin impact structure, which was formed by a meteorite impact in Northern Labrador, Canada ~36 million years ago.

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Synchrotron X-ray Scanning Probe Microscopy (SXSPM) | Advanced Photon Source

Synchrotron X-ray Scanning Probe Microscopy (SXSPM) | Advanced Photon Source | Mineralogy, Geochemistry, Mineral Surfaces & Nanogeoscience | Scoop.it
Advanced Photon Source - an Office of Science user facility
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The colour of ceramics from Bell Beaker contexts in NW Spain: relation to elemental composition and mineralogy

"The colour of ceramics from Bell Beaker contexts in NW Spain: relation to elemental composition and mineralogy" http://t.co/weRKw079TJ
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Machine-learning techniques for geochemical discrimination of 2011 Tohoku tsunami deposits

Machine-learning techniques for geochemical discrimination of 2011 Tohoku tsunami deposits | Mineralogy, Geochemistry, Mineral Surfaces & Nanogeoscience | Scoop.it
Ath Godelitsas's insight:

The authors propose a mathematical methodology for the geochemical discrimination of tsunami deposits using machine-learning techniques. The proposed method can determine the appropriate combinations of elements and the precise discrimination plane that best discerns tsunami deposits from non-tsunami deposits in high-dimensional compositional space through the use of data sets of bulk composition that have been categorised as tsunami or non-tsunami sediments.

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Mineralogical Society of America - Arsenic: Environmental Geochemistry, Mineralogy, and Microbiology

Mineralogical Society of America - Arsenic: Environmental Geochemistry, Mineralogy, and Microbiology | Mineralogy, Geochemistry, Mineral Surfaces & Nanogeoscience | Scoop.it
Mineralogical Society of America - Arsenic: Environmental Geochemistry, Mineralogy, and Microbiology http://t.co/AgxSTJGWhS
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The terrestrial uranium isotope cycle

The terrestrial uranium isotope cycle | Mineralogy, Geochemistry, Mineral Surfaces & Nanogeoscience | Scoop.it
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The authors explore the isotopic characteristics of the global uranium cycle. They show that the subducted flux of uranium is isotopically distinct, with high 238U/235U ratios, as a result of alteration processes at the bottom of an oxic ocean. They also find that mid-ocean-ridge basalts (MORBs) have 238U/235U ratios higher than does the bulk Earth, confirming the widespread pollution of the upper mantle with this recycled uranium.

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In Memoriam: Robert Berner

In Memoriam: Robert Berner | Mineralogy, Geochemistry, Mineral Surfaces & Nanogeoscience | Scoop.it

Bob got his B.S. and M.S. degrees from the University of Michigan, and his Ph.D. from Harvard. He did a postdoc at the Scripps Institution of Oceanography before moving to the University of Chicago as an Assistant Professor in 1963. He came to Yale in 1965, and stayed here for the rest of his career.

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We extend our deepest, heartfelt condolences to his family at this most difficult time.

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The First Synchrotron Light of Taiwan Photon Source Shined on New Year's Eve

The First Synchrotron Light of Taiwan Photon Source Shined on New Year's Eve | Mineralogy, Geochemistry, Mineral Surfaces & Nanogeoscience | Scoop.it

On the last day of 2014, the Taiwan Photon Source (TPS) has delivered its first synchrotron light at 13:58, an exciting news released by the National Synchrotron Radiation Research Center (NSRRC) in Hsinchu, Taiwan.

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LANL Space sur Twitter

LANL Space sur Twitter | Mineralogy, Geochemistry, Mineral Surfaces & Nanogeoscience | Scoop.it
#7: LANL's #Supercam laser instrument will provide imaging, chemical composition analysis, and mineralogy. #Mars2020 pic.twitter.com/Wr7JimtaHG
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Rare earth elements: Simple commodity or strategic vulnerability?

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Are REEs best understood as simple commodities, or as strategic resources that can be  used as tools of statecraft? And can Australia play a part in the development of alternative  reliable sources of rare earths? To help understand the strategic importance of REEs the National Security College and Crawford School of Public Policy welcome two global experts in the field.

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Activation of Persulfate by Irradiated Magnetite

Activation of Persulfate by Irradiated Magnetite | Mineralogy, Geochemistry, Mineral Surfaces & Nanogeoscience | Scoop.it
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The authors showed that phenol can be effectively degraded by magnetite in the presence of persulfate (S2O82–) under UVA irradiation.

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EAG Council Elections « European Association of Geochemistry

EAG Council Elections « European Association of Geochemistry | Mineralogy, Geochemistry, Mineral Surfaces & Nanogeoscience | Scoop.it
The European Association of Geochemistry, EAG, aims to promote geochemical research in Europe.
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16th International Conference on X‐ray Absorption Fine Structure, 23-28 August 2015, Karlsruhe

16th International Conference on X‐ray Absorption Fine Structure, 23-28 August 2015, Karlsruhe | Mineralogy, Geochemistry, Mineral Surfaces & Nanogeoscience | Scoop.it
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Nanoscale infrared spectroscopy as a non-destructive probe of extraterrestrial samples

Nanoscale infrared spectroscopy as a non-destructive probe of extraterrestrial samples | Mineralogy, Geochemistry, Mineral Surfaces & Nanogeoscience | Scoop.it
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The authors report on the successful implementation of infrared near-field imaging, spectroscopy and analysis techniques capable of sub-micron scale mineral identification within natural samples, including a chondrule from the Murchison meteorite and a cometary dust grain (Iris) from NASA's Stardust mission.

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Complex mineralogy on the Red Planet: First X-ray diffraction measurements on Mars

Complex mineralogy on the Red Planet: First X-ray diffraction measurements on Mars | Mineralogy, Geochemistry, Mineral Surfaces & Nanogeoscience | Scoop.it
In 2012 the Mars Science Laboratory landed in the fascinating Gale crater. The Gale crater is of such great interest because of the 5.5 km high mountain of layered materials in the middle.
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Nanoscopic X-ray Fluorescence Imaging of Meteoritic Particles and Diamond Inclusions

Nanoscopic X-ray Fluorescence Imaging of Meteoritic Particles and Diamond Inclusions | Mineralogy, Geochemistry, Mineral Surfaces & Nanogeoscience | Scoop.it
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The new ESRF ID16B-NA Nanoanalysis beamline has been applied for the first time for XRF imaging with a resolution level down to a few tens of nanometers on rare geological materials: meteoritic fragments from achondrite NWA 6693 and diamond inclusions.

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