Mineralogy, Geochemistry, Mineral Surfaces & Nanogeoscience
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Witwatersrand Diamonds Suggest Plate Tectonics Started 3.5 Billion Years Ago (via @deepcarb)

Witwatersrand Diamonds Suggest Plate Tectonics Started 3.5 Billion Years Ago (via @deepcarb) | Mineralogy, Geochemistry, Mineral Surfaces & Nanogeoscience | Scoop.it
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Kim Leslie's curator insight, January 19, 5:43 PM

Earth Science Students - what do you think? These scientists obviously weren't alive 3.5 billion years ago to witness this - so how do they know? 

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Incidental nanomaterials in the environment, and why it is critical that we pay attention (GEOC59) by Michael Hochella

Incidental nanomaterials in the environment, and why it is critical that we pay attention (GEOC59) by Michael Hochella | Mineralogy, Geochemistry, Mineral Surfaces & Nanogeoscience | Scoop.it
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ICDD Dancing Molecules - Modulated Structures

PDF-4+ - The Powder Diffraction File™ - Release 2014 Modulated Structures – Dancing Molecules Modulated and composite crystals.

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Paleomineralogy of the Hadean Eon: A preliminary species list

Paleomineralogy of the Hadean Eon: A preliminary species list | Mineralogy, Geochemistry, Mineral Surfaces & Nanogeoscience | Scoop.it
Ath Godelitsas's insight:

The dramatic mineralogical consequences of life are reflected in the absence of Hadean biomineralization; for example, the lack of extensive carbonate deposits and the associated restricted development of skarn and cave minerals prior to 4 Ga. Most importantly, it was not until after the establishment via photosynthesis of significant near-surface redox gradients that supergene alteration, redox-controlled ore deposition, and subaerial weathering in an oxidizing environment could diversify Earth's near-surface mineralogy.

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120,000 years of history in 3 millimeters of rock

120,000 years of history in 3 millimeters of rock | Mineralogy, Geochemistry, Mineral Surfaces & Nanogeoscience | Scoop.it
Ath Godelitsas's insight:

See also: http://news.berkeley.edu/2016/01/11/rings-on-rocks-detail-north-american-paleoclimate/?utm_content=buffer3d90c&utm_medium=social&utm_source=twitter.com&utm_campaign=buffer

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Scientists discover how blue and green clays kill bacteria

Scientists discover how blue and green clays kill bacteria | Mineralogy, Geochemistry, Mineral Surfaces & Nanogeoscience | Scoop.it
Natural antibacterial clays, when hydrated and applied topically, kill human pathogens including antibiotic resistant strains proliferating worldwide.
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See also: http://phys.org/news/2016-01-scientists-blue-green-clays-bacteria.html

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The Summons Lab at MIT: Tracking the Molecules of Life

Science for the Public, the Working Science series. April, 2015. Roger Summons, Ph.D., Professor of Geobiology, Massachusetts Institute of Technology.

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Applications of surface analytical techniques in Earth Sciences

Applications of surface analytical techniques in Earth Sciences | Mineralogy, Geochemistry, Mineral Surfaces & Nanogeoscience | Scoop.it
Ath Godelitsas's insight:

A range of surface techniques and their applications in Earth Sciences are reviewed.

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Spontaneous Water Oxidation at Hematite (α-Fe2O3) Crystal Faces

Spontaneous Water Oxidation at Hematite (α-Fe2O3) Crystal Faces | Mineralogy, Geochemistry, Mineral Surfaces & Nanogeoscience | Scoop.it
Ath Godelitsas's insight:

The authors extend a series of studies that examine pH-dependent surface potentials and electron-transfer properties of effectively perfect low-index crystal faces of hematite in contact with simple electrolyte. Zero-resistance amperometry (ZRA) was performed in a two electrode configuration to quantify spontaneous dark current between hematite crystal face pairs (001)/(012), (001)/(113), and (012)/(113) at pH 3.

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CaSO4 Mineralization in Carboxy- and Amino-Functionalized Reverse Micelles Unravels Poorly Hydrated Nanophases (Bassanite)

CaSO4 Mineralization in Carboxy- and Amino-Functionalized Reverse Micelles Unravels Poorly Hydrated Nanophases (Bassanite) | Mineralogy, Geochemistry, Mineral Surfaces & Nanogeoscience | Scoop.it

Organically/inorganically functionalized reverse micelles are used to rapidly establish pathways relevant to calcium sulfate mineralization in solution (including long-term stabilization of poorly hydrated phases by organic moieties, dissolution−crystallization of rounded nanocrystals and oriented attachment of nanorods).Organically/inorganically functionalized reverse micelles are used to rapidly establish pathways relevant to calcium sulfate mineralization in solution (including long-term stabilization of poorly hydrated phases by organic moieties, dissolution−crystallization of rounded nanocrystals and oriented attachment of nanorods).

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Next-generation X-ray source fires up

Next-generation X-ray source fires up | Mineralogy, Geochemistry, Mineral Surfaces & Nanogeoscience | Scoop.it

Swedish synchrotron promises to open up new avenues for researchers. | Mineralogy, Geochemistry, Mineral Surfaces & Nanogeoscience

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Mars Science Laboratory - CheMin Instrument Demonstration

Dr. David Blake, Principal Investigator of the CheMin instrument, gives a demonstration of his invention at the Kennedy Space Center.

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Geochemical reaction kinetics using nanometer-sized metal-hydroxide and -oxide ions (GEOC62) by William Casey

Geochemical reaction kinetics using nanometer-sized metal-hydroxide and -oxide ions (GEOC62) by William Casey | Mineralogy, Geochemistry, Mineral Surfaces & Nanogeoscience | Scoop.it
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Visualizing atoms of perovskite crystals

Visualizing atoms of perovskite crystals | Mineralogy, Geochemistry, Mineral Surfaces & Nanogeoscience | Scoop.it
Ath Godelitsas's insight:

See also: http://www.sciencedaily.com/releases/2016/01/160108134326.htm

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Materials Scientists Make Martian Concrete | MIT Technology Review

Materials Scientists Make Martian Concrete | MIT Technology Review | Mineralogy, Geochemistry, Mineral Surfaces & Nanogeoscience | Scoop.it
If we’re going to colonize Mars, we’ll need buildings to live and work in. So researchers have made cheap, strong concrete out of “Martian” soil.
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Decrease in coccolithophore calcification and CO2 since the middle Miocene

Decrease in coccolithophore calcification and CO2 since the middle Miocene | Mineralogy, Geochemistry, Mineral Surfaces & Nanogeoscience | Scoop.it
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This paper relates degree of coccolith calcification to cellular calcification, and presents the first records of size-normalized coccolith thickness spanning the last 14 Myr from tropical oceans.

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Life's Rocky Start | NOVA

What is the secret link between rocks and minerals, and every living thing on Earth? Airing January 13, 2016 at 9 pm on PBS NOVA Facebook: https://www.facebo...
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Early Archaean tectonics and mantle redox recorded in Witwatersrand diamonds

Early Archaean tectonics and mantle redox recorded in Witwatersrand diamonds | Mineralogy, Geochemistry, Mineral Surfaces & Nanogeoscience | Scoop.it
Ath Godelitsas's insight:

The authors have analysed the nitrogen abundance, as well as the nitrogen and carbon isotopic signatures of Archaean placer diamonds from the Kaapvaal craton, South Africa, which formed in the upper mantle 3.1 to 3.5 billion years ago.

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Stable Isotope Geochemistry Laboratory

This video describes one of the two Stable Isotope Facilities, available at The Open University, Milton Keynes, UK. The system, based around Thermo MAT 253 m...

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Uranium fate during crystallization of magnetite in conditions relevant to the disposal of radioactive waste

Uranium fate during crystallization of magnetite in conditions relevant to the disposal of radioactive waste | Mineralogy, Geochemistry, Mineral Surfaces & Nanogeoscience | Scoop.it

U LIII-edge k3-weighted EXAFS spectra (left) and Fourier transforms plotted without a phase shift (right).

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Synchrotron Diffraction Micro-Tomography: Superplasticizer-Induced Change of C–S–H Nucleation in Cement

Synchrotron Diffraction Micro-Tomography: Superplasticizer-Induced Change of C–S–H Nucleation in Cement | Mineralogy, Geochemistry, Mineral Surfaces & Nanogeoscience | Scoop.it
Synchrotron Diffraction Micro-Tomography: Superplasticizer-Induced Change of C–S–H Nucleation in Cement
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MESSENGER: MErcury Surface, Space ENvironment, GEochemistry, and Ranging

MESSENGER: MErcury Surface, Space ENvironment, GEochemistry, and Ranging | Mineralogy, Geochemistry, Mineral Surfaces & Nanogeoscience | Scoop.it

MESSENGER: MErcury Surface, Space ENvironment, GEochemistry, and Ranging https://t.co/XU3PBcRaq1

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