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Radiographic visualization of magma dynamics in an erupting volcano

Radiographic visualization of magma dynamics in an erupting volcano | Mineralogy, Geochemistry, Mineral Surfaces & Nanogeoscience | Scoop.it
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The authors report the first radiographic observation of the ascent and descent of magma along a conduit utilizing atmospheric (cosmic ray) muons (muography) with dynamic radiographic imaging.

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Mineralogy, Geochemistry, Mineral Surfaces & Nanogeoscience
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CNME

This is "CNME" by Plataforma de Divulgación on Vimeo, the home for high quality videos and the people who love them.
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Probing iron chemistry in the deep mantle | Carnegie Institution for Science

Probing iron chemistry in the deep mantle | Carnegie Institution for Science | Mineralogy, Geochemistry, Mineral Surfaces & Nanogeoscience | Scoop.it
Washington, D.C.— Carbonates are a group of minerals that contain the carbonate ion (CO32-) and a metal, such as iron or magnesium. Carbonates are important constituents of marine sediments and are heavily involved in the planet’s deep carbon cycle, primarily due to oceanic crust sinking into the mantle, a process called subduction. During subduction, carbonates interact with other minerals, which alter their chemical compositions.
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Geochemical Transactions | Abstract | Biomineralisation by earthworms – an investigation into the stability and distribution of amorphous calcium carbonate

Many biominerals form from amorphous calcium carbonate (ACC), but this phase is highly unstable when synthesised in its pure form inorganically. Several species of earthworm secrete calcium carbonate granules which contain highly stable ACC.
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Geochemical process on Saturn's moon linked to life's origin

Geochemical process on Saturn's moon linked to life's origin | Mineralogy, Geochemistry, Mineral Surfaces & Nanogeoscience | Scoop.it
New work from a team including Carnegie's Christopher Glein has revealed the pH of water spewing from a geyser-like plume on Saturn's moon Enceladus.
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Periodico di mineralogia vol 83,3 - December 2014 | Edizioni Nuova Cultura

Periodico di mineralogia vol 83,3 - December 2014 | Edizioni Nuova Cultura | Mineralogy, Geochemistry, Mineral Surfaces & Nanogeoscience | Scoop.it
Jaloul Bejaoui, Salah Bouhlel and Donatella Barca, Geology, Mineralogy and Fluid inclusions investigation of the Fluorite deposit at Jebel Kohol, northeastern Tunisia Silvia Bracco, Anna Brajkovic, Angiolina Comotti and Vanda Rolandi,...
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Goldschmidt 2015 Conference @goldschmidt2015

Goldschmidt2015 will be the 25th Goldschmidt conference, and to celebrate it we are returning to beautiful Prague, the same venue as Goldschmidt2011.
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Serpentinization: Implications for hydrogen production and habitability on Mars

Serpentinization: Implications for hydrogen production and habitability on Mars | Mineralogy, Geochemistry, Mineral Surfaces & Nanogeoscience | Scoop.it
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The extensive presence of tetrahedral Fe3+ in serpentine shows the system liberally produced H2 while the isotope systematics have implications for preservation of indicators of the aqueous conditions that formed serpentinites on Mars and their habitability.

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Origin of life: Surface structures of sulfide minerals could explain emergence of life

Origin of life: Surface structures of sulfide minerals could explain emergence of life | Mineralogy, Geochemistry, Mineral Surfaces & Nanogeoscience | Scoop.it
The mineral greigite presents similar surface structures to the active sites found in many modern-day enzymes. We show that particles of greigite can reduce CO2 under ambient conditions into chemicals such as methanol, formic, acetic and pyruvic acid. Our results also lend support to the Origin of Life theor
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Chemists hope to break China's monopoly on rare-earth elements

Chemists hope to break China's monopoly on rare-earth elements | Mineralogy, Geochemistry, Mineral Surfaces & Nanogeoscience | Scoop.it
Chemists hope to break China's monopoly on rare-earth elements by finding cheap, efficient ways to extract them from ore.
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Sulphur geodynamic cycle

Sulphur geodynamic cycle | Mineralogy, Geochemistry, Mineral Surfaces & Nanogeoscience | Scoop.it
Ath Godelitsas's insight:

This paper presents S/3He ratios of vesicles in mid-ocean ridge (MOR) basalt glass together with the ratios of high-temperature hydrothermal fluids to calculate the sulphur flux of 100 Gmol/y at MOR.

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Surface alteration mechanism and topochemistry of iron in tremolite asbestos

Surface alteration mechanism and topochemistry of iron in tremolite asbestos | Mineralogy, Geochemistry, Mineral Surfaces & Nanogeoscience | Scoop.it
Ath Godelitsas's insight:

With the aim to shed a light on this mechanism, two tremolite samples, one from Italy (Castelluccio) and one from USA (Maryland), immersed in a buffer solution (pH 7.4) with H2O2 were characterized by a multi-technique approach.

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In situ Imaging of Interfacial Precipitation of Phosphate on Goethite

In situ Imaging of Interfacial Precipitation of Phosphate on Goethite | Mineralogy, Geochemistry, Mineral Surfaces & Nanogeoscience | Scoop.it
Ath Godelitsas's insight:

In-situ Atomic Force Microscopy (AFM) has been used to probe the interaction of phosphate-bearing solutions with goethite, α-FeOOH, (010) cleavage surfaces.

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Phase transformation and nanometric flow cause extreme weakening during fault slip

Phase transformation and nanometric flow cause extreme weakening during fault slip | Mineralogy, Geochemistry, Mineral Surfaces & Nanogeoscience | Scoop.it
Faults weaken during earthquakes. Laboratory simulations of earthquake rupture show that the nanometric-scale fault gouge created during slip is inherently weak and flows by grain-boundary sliding, providing a mechanism to weaken faults.
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High-speed friction experiments on a wide variety of rock types have shown that they all exhibit extreme weakening and that the sliding surface is nanometric and contains phases not present at the start.

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Arsenate incorporation effects on the nucleation and growth of Fe(III) (hydr)oxides on quartz

Arsenate incorporation effects on the nucleation and growth of Fe(III) (hydr)oxides on quartz | Mineralogy, Geochemistry, Mineral Surfaces & Nanogeoscience | Scoop.it
Ath Godelitsas's insight:

Utilizing grazing incidence small-angle X-ray scattering (GISAXS) the authors studied heterogeneous iron(III) (hydr)oxide nucleation and growth on quartz substrates for systems containing arsenate -and also phosphate- anions.

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Soil and human security in the 21st century

Soil and human security in the 21st century | Mineralogy, Geochemistry, Mineral Surfaces & Nanogeoscience | Scoop.it
Ath Godelitsas's insight:

The vastness of the planet and its soil resources allowed agriculture to expand, with growing populations, or to move, when soil resources were depleted.

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European Mineralogical Union (EMU) Research Excellence Medal

European Mineralogical Union (EMU) Research Excellence Medal | Mineralogy, Geochemistry, Mineral Surfaces & Nanogeoscience | Scoop.it
Ath Godelitsas's insight:

The 2014 EMU Research Excellence Medal has been awarded to Encarnación Ruiz-Agudo, Department of Mineralogy and Petrology, University of Granada, Spain. She is awarded the EMU Medal for excellence in research in recognition for her important contributions to the field of mineral-water interactions and related phenomena. Her research finds a wide range applications from weathering processes and geochemical proxies to crystal growth processes and environmental remediation. The awarding of this medal also recognizes Dr. Ruiz-Agudo’s active involvement in mineralogical research at the European level with collaborations with scientists from numerous countries. Her stature in the international mineralogical community is underlined by her guest editorship of a recent issue of ELEMENTS (June 2013).

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Soft X-ray SpectroMicroscopy Facility at the Canadian Light Source (CLS-SM)

Soft X-ray SpectroMicroscopy Facility at the Canadian Light Source (CLS-SM) | Mineralogy, Geochemistry, Mineral Surfaces & Nanogeoscience | Scoop.it
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Future volcanism at Yellowstone caldera: Yellowstone Volcano: Geologists Say It Will Blow Without Warning

Future volcanism at Yellowstone caldera: Yellowstone Volcano: Geologists Say It Will Blow Without Warning | Mineralogy, Geochemistry, Mineral Surfaces & Nanogeoscience | Scoop.it
A recent scientific paper by the The Geological Society Of America titled: Future volcanism at Yellowstone caldera, suggests that previous eruptions have come from deep within the volcano and they ...
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Rare African plant signals diamonds beneath the soil

Rare African plant signals diamonds beneath the soil | Mineralogy, Geochemistry, Mineral Surfaces & Nanogeoscience | Scoop.it
Geologist discovers first botanical indicator for diamond-bearing rock
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See also the corresponding paper: http://econgeol.geoscienceworld.org/content/110/4/851.abstract

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μXANES study of iron redox state in serpentine during oceanic serpentinization

μXANES study of iron redox state in serpentine during oceanic serpentinization | Mineralogy, Geochemistry, Mineral Surfaces & Nanogeoscience | Scoop.it
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The authors measured the iron redox state in oceanic serpentine minerals using μXANES.

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Carbonate minerals could remediate contaminated groundwater

Carbonate minerals could remediate contaminated groundwater | Mineralogy, Geochemistry, Mineral Surfaces & Nanogeoscience | Scoop.it
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See also the corresponding paper: http://www.sciencedirect.com/science/article/pii/S0016703714006358

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SPring-8 Synchrotron 施設公開用

2009年度制作。大型放射光施設SPring-8(スプリングエイト)の施設紹介。
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A first step toward the understanding of the mechanisms inducing carcinogenicity in fibrous minerals

A first step toward the understanding of the mechanisms inducing carcinogenicity in fibrous minerals | Mineralogy, Geochemistry, Mineral Surfaces & Nanogeoscience | Scoop.it
Ath Godelitsas's insight:

Two samples of fibrous erionite from different localities of Oregon, USA were suspended in FeCl2 solutions at different concentrations, at pH ca. 5, in anaerobic conditions. Identification of segregation of Fe (II) at Ca3, which is coupled with the high surface area of erionite, provides very important information for the understanding of the molecular mechanism/s inducing its strong carcinogenicity.

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