Results 71 to 80 of about 4,473 (252)

The Uitkomst intrusion and Nkomati Ni-Cu-Cr-PGE deposit, South Africa: trace element geochemistry, Nd isotopes and high-precision geochronology [PDF]

, 2017
The Uitkomst intrusion is a tubular mafic-ultramafic layered body that hosts one of South Africa’s largest Ni-Cu-Cr-PGE deposits, Nkomati. The sulphide ore occurs in the form of massive lenses in the immediate quartzitic footwall and as disseminations ...
C.J. Wall, J.S. Scoates, S.-J. Barnes, S.A. Prevec, T. Gomwe, W.D. Maier   +5 more
core   +2 more sources

Grammatikopoulosite, NiVP, a New Phosphide from the Chromitite of the Othrys Ophiolite, Greece

Minerals, 2020
Grammatikopoulosite, NiVP, is a new phosphide discovered in the podiform chromitite and hosted in the mantle sequence of the Othrys ophiolite complex, central Greece.
L. Bindi, F. Zaccarini, E. Ifandi, B. Tsikouras, C. Stanley, G. Garuti, D. Mauro   +6 more
semanticscholar   +1 more source

GGR Handbook of Rock and Mineral Analysis Chapter 2 (Part 1) Analysis of Geological Materials – 1: Sample Preparation Methods

Geostandards and Geoanalytical Research, Volume 49, Issue 1, Page 9-50, March 2025.
Key Points Comprehensive review of dissolution‐decomposition methods based on acid attack and molten salt fusion. Dissolution remains the preferred method for many modern instrumental measurement principles e.g., ICP‐MS, ICP‐AES and TIMS. Comprehensive reviews of flux-free fusion for glasses and production of pressed powder pellets for analysis by EPMA,
Philip Robinson
wiley   +1 more source

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

, 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  

Probe and SIMS investigation of clinopyroxene inclusions in chromites from the Troodos chromitites (Cyprus): Implications for dunite–chromitite genesis

Ore Geology Reviews, 2011
Chromite ores formation is still a debated topic and, in this study, detailed analyses of major, minor elements by EMPA and Rare Earth Elements (REE) by SIMS, were performed on silicate inclusions detected in chromite grains of chromitite pods, enveloping dunites and on clinopyroxene of lherzolitic host rock of well known Trodoos chromite ores. Results
Merlini A, Grieco G, Ottolini L, Diella V   +3 more
openaire   +4 more sources

Low Temperature Sabatier CO2 Methanation

ChemCatChem, 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, Seema Shafiq, Philippe Serp   +2 more
wiley   +1 more source

Mineral chemistry and chromite mineralization in the Qaranaz-Alamkandi area, west Zanjan

Journal of Economic Geology, 2021
Introduction Malek Ghasemi and Karimzadeh Somarin (2005) reported that Chromite deposits in Iran occur in Paleozoic and Mesozoic ophiolite complexes in association with serpentinite and serpentinized peridotites and dunites (Ghazi et al., 2004; Shafaii ...
Parham Ahrabian Fard, Ghasem Nabatian, Mir Ali Asghar Mokhtari , Maryam Honarmand , Hossein Kouhestani   +4 more
doaj   +1 more source

The Cedrolina Chromitite, Goiás State, Brazil: A Metamorphic Puzzle [PDF]

Minerals, 2016
The Cedrolina chromitite body (Goiás-Brazil) is concordantly emplaced within talc-chlorite schists that correspond to the poly-metamorphic product of ultramafic rocks inserted in the Pilar de Goiás Greenstone Belt (Central Brazil). The chromite ore displays a nodular structure consisting of rounded and ellipsoidal orbs (up to 1.5 cm in size), often ...
de Melo Portella, Yuri, Zaccarini, Federica, Luvizotto, George L., Garuti, Giorgio, Bakker, Ronald J., Angeli, Nelson, Thalhammer, Oskar   +6 more
openaire   +3 more sources

RocMLMs: Predicting Rock Properties Through Machine Learning Models

Journal 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, Nestor G. Cerpa, Andréa Tommasi, Marguerite Godard, José Alberto Padrón‐Navarta   +4 more
wiley   +1 more source

PGM in chromitites of Kraka massifs (the Southern Urals): diversity and origin

Georesursy
The paper provides results of study of platinum group minerals (PGMs) from 18 ore occurrences and deposits of the Kraka massifs, most of these located in ultramafic rocks of the upper mantle section (15), and several occurrences in a crust-mantle ...
D. E. Saveliev
doaj   +1 more source