Results 61 to 70 of about 8,830 (171)

Occurrence, release and alteration of chromite nanoparticles [PDF]

, 2021
Many environmental risk assessments are based on the total concentration of elements in natural waters/ soils, ignoring that a significant proportion of elements is associated with nanoparticles.
McClenaghan, Neal
core   +1 more source

High temperature oxidation resistance of rare earth chromite coated Fe-20Cr and Fe-20Cr-4Al alloys

Materials Research, 2007
Doped lanthanum chromite has been used in solid oxide fuel cell (SOFC) interconnects. The high costs involved in obtaining dense lanthanum chromite have increased efforts to find suitable metallic materials for interconnects.
Marina Fuser Pillis, Lalgudi Venkataraman Ramanathan   +1 more
doaj   +1 more source

Mechanical Properties and Fracture Behaviour of New Zealand Nephrite Jade (Pounamu): Implications for Fibre‐Toughening Mechanisms in Amphibole Monomineralic Rocks

New Zealand Journal of Geology and Geophysics, Volume 69, Issue 3, September 2026.
Results of the first comprehensive quantitative analysis of the mechanical properties of New Zealand nephrite jade (pounamu), including hardness, Young's modulus, fracture toughness and notched flexural strength are reported for seven samples. These samples of exceptional quality were pre‐selected by experienced Māori carvers through a ranking process.
Natalia Seliutina, Kai Chun Li, Simon C. Cox, Marshall Palmer, David J. Prior, Nick Mortimer, Anne Ford, Li‐Wei Kuo   +7 more
wiley   +1 more source

Coupled Gas and Mineral Chemistry in a 60‐Day Venus Weathering Experiment at the Glenn Extreme Environments Rig (GEER)

Journal of Geophysical Research: Planets, Volume 131, Issue 9, September 2026.
Abstract Investigations of the venusian surface suggest chemical alteration (weathering) of rocks in contact with a hot, high‐pressure atmosphere. This alteration was anticipated based on mineral stability considerations and has been supported by laboratory experiments conducted under Venus surface conditions.
Alison R. Santos, Mikhail Yu. Zolotov, Martha S. Gilmore, Craig Motil, Kyle Phillips, Valerie Tu   +5 more
wiley   +1 more source

A neoproterozoic age for the chromitite and gabbro of the Tapo Ultramafic Massif, Eastern Cordillera, Central Peru, and its tectonic implications [PDF]

, 2011
The ultramafic-mafic rocks of the Tapo Complex are exposed in the Eastern Cordillera of the Central Peruvian Andes. This complex is composed of serpentinised peridotites and metabasites with some podiform chromitite lenses and chromite disseminations and
Acosta, Jorge, Pereira, Eurico, Tassinari, Colombo Celso Gaeta, Jose F. Rodrigues, Rodrigues, Jose F., Eurico Pereira, Ricardo Castroviejo, Castroviejo Bolibar, Ricardo, Acosta Ale, Jorge Gilberto, Tassinari, Colombo G., Jorge Acosta, Colombo C.G. Tassinari, Rodrigues, José Feliciano   +12 more
core   +1 more source

The podiform chromitites in the Dagküplü and Kavad mines, Eskisehir ophiolite (NW-Turkey): Genetic implications of mineralogical and geochemical data

Geologica Acta, 2009
Mantle tectonites from Eskisehir (NW-Turkey) include high-Cr chromitites with limited variation of Cr#, ranging from 65 to 82. Mg# ratios are between 54 and 72 and chromite grains contain up to 3.71 wt% Fe2O3 and 0.30 wt% TiO2.
I. UYSAL, F. ZACCARINI, M.B. SADIKLAR, M. TARKIAN, O.A.R. THALHAMMER, G. GARUTI   +5 more
doaj  

Formation and Alteration of Magnesite Nodules From Kunwarara, Queensland, Australia, as an Analog to Mg‐Carbonate Formation on Mars

Journal of Geophysical Research: Planets, Volume 131, Issue 9, September 2026.
Abstract Magnesite (MgCO3) is a magnesium (Mg) carbonate mineral that records the aqueous environmental conditions of its formation. On Earth, magnesite forms in metamorphic, diagenetic or pedogenic environments, and distinguishing between these environments is critical for understanding the fluid chemistry during magnesite precipitation. Mg carbonates
E. L. Cardarelli, T. M. Present, P. M. Vasconcelos, L. C. Kah, C. Swindle, S. Bhattacharjee, K. Farley   +6 more
wiley   +1 more source

Binary modelling the milling of UG2 ore using a matrix approach

Journal of Materials Research and Technology, 2017
The study reports a binary matrix modelling and simulation studies to improve the performance of the secondary grinding circuit of UG2 ores. The model developed was intended to help searching for optimal operating conditions of the secondary milling ...
Méschac-Bill Kime, Michael H. Moys
doaj   +1 more source

CHROMITE: FROM THE MINERAL TO THE COMMODITY [PDF]

, 2013
Chromite belongs to the spinel group with the general chemical formula XY2O4, where X and Y represent divalent and trivalent metal ions, respectively. Four types of chromite ore deposits occur as either lode or secondary deposits.
M. Pedrotti
core   +1 more source

Phase Equilibria in the FeO–Fe2O3–Sb2O3–Sb2O5–SiO2 System in Equilibrium With Metal and in Air/Oxygen Atmosphere

Journal of the American Ceramic Society, Volume 109, Issue 9, September 2026.
ABSTRACT Experimental study and thermodynamic modeling of the phase equilibria in the FeO–FeO1.5–SbO1.5–SbO2.5–SiO2 system in air and 1 atm oxygen, and in equilibrium with Sb/Sb–Ag metal has been undertaken. Experimental data at 575°C–1600°C were obtained using high‐temperature equilibration of mixtures in sealed silica ampoules, Fe3O4 basket/MgO ...
Hamed Abdeyazdan, Maksym Shevchenko, Evgueni Jak   +2 more
wiley   +1 more source