Results 61 to 70 of about 2,269 (206)

Genesis of podiform chromitites – a review of models

open access: yesNEWS of the Ural State Mining University, 2020
Relevance of the work. Research aimed at identification of genesis of chromium ores in alpine-type hyperbasites has been conducted by scientists (geologists, petrologists and geochemists) around the world for more than a century. Nevertheless, the issue of their origin remains debatable to this day.
Pavel Borisovich SHIRYAEV   +1 more
openaire   +1 more source

Low Temperature Sabatier CO2 Methanation

open access: yesChemCatChem, Volume 16, Issue 24, December 20, 2024.
This review exhaustively summarizes the advances made since the beginning of the century in the field of the Sabatier reaction conducted at temperatures less than or equal to 200 °C. Thermal catalysis as well as plasma‐assisted and photo‐assisted catalysis are described there.
Clément Molinet‐Chinaglia   +2 more
wiley   +1 more source

Magma feeding paleochannel in the Monchegorsk ore region: geochemistry, isotope U-Pb and Sm-Nd analysis (Kola region, Russia)

open access: yesЗаписки Горного института, 2022
A comprehensive study of a 340 m thick lenticular-sheet body of ultramafic composition penetrated by structural well M-1 at a depth of about 2.2 km was accomplished.
Valeriy F. Smolkin   +4 more
doaj   +1 more source

The genesis and tectonic significance of chromitite-bearing serpentinites in southern NSW [PDF]

open access: yes, 1998
University of Technology, Sydney. Faculty of Science.The Tumut Serpentinite Province consists of four major serpentinite belts and numerous small serpentinite bodies, that occupy a long narrow tract within the Lachlan Fold Belt of southern NSW.
Graham, IT
core  

Tibetan chromitites: Excavating the slab graveyard

open access: yesGeology, 2015
Podiform chromitites enclosed in depleted harzburgites of the Luobusa massif (southeastern Tibet) contain diamond and a highly reduced trace-mineral association. Exsolution of diopside and coesite from chromite suggests inversion from the Ca-ferrite structure in the upper part of the mantle transition zone (>400 km).
McGowan, Nicole   +8 more
openaire   +4 more sources

RocMLMs: Predicting Rock Properties Through Machine Learning Models

open access: yesJournal of Geophysical Research: Machine Learning and Computation, Volume 1, Issue 4, December 2024.
Abstract Mineral phase transformations significantly alter the bulk density and elastic properties of mantle rocks and consequently have profound effects on mantle dynamics and seismic wave propagation. These changes in the physical properties of mantle rocks result from evolution in the equilibrium mineralogical composition, which can be predicted by ...
Buchanan Kerswell   +4 more
wiley   +1 more source

Solid-state redistribution of mineral particles in the upwelling mantle flow as a mechanism of chromite concentration in the ophiolite ultramafic rocks (on the example of Kraka ophiolite, the Southern Urals)

open access: yesGeoresursy, 2019
The main regularities of the structure of chromitite-bearing zones of ultramafic rock of the ophiolitic association are considered on the example of Kraka massifs.
D.E. Saveliev, V.B. Fedoseev
doaj   +1 more source

Compositional variation of laurite at Union Section in the Western Bushveld Complex [PDF]

open access: yes, 1999
One hundred and forty five grains of laurite in polished sections of samples from one borehole through the major chromitite layers and some chromite-bearing silicate rocks of the Lower and Critical Zones of the western Bushveld Complex at Union Section ...
Barnes, Sarah-Jane   +3 more
core   +1 more source

Chromitites of the Akkarginskiy massif (the Southern Urals)

open access: yesВестник Пермского университета. Геология, 2018
We consider the geological features of ultramafic rock and chrome ore deposits. It is shown that all studied deposits are podiform in morphology that is typical for the ophiolite ultramafic rocks. Morphological and chemical features of the accessory and oreforming spinels are described.
D. E. Saveliev, I. I. Musabirov
openaire   +3 more sources

Integration of ground geophysical methods to characterize near‐surface aquifer zones within an active mine

open access: yesNear Surface Geophysics, Volume 22, Issue 5, Page 521-538, October 2024.
Abstract Understanding near‐surface groundwater storage, flow patterns, surface and groundwater interactions in mining areas can assist in making mining more efficient and profitable. This is especially important in opencast mines affected by water inflows that may negatively affect production and increase mining costs. We map and characterize the near‐
Sikelela Gomo   +8 more
wiley   +1 more source

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