Results 41 to 50 of about 11,045 (163)

Applicability of carbothermic reduction for upgrading Sri Lankan ilmenite ores: towards converting ilmenite into synthetic rutile by mechanical activation

Bulletin of the National Research Centre, 2021
Background Ilmenite and rutile are naturally occurring titanium-bearing heavy minerals. Sri Lanka consists of ilmenite and rutile in placer deposits mainly along the northeast coast. The commercial value of rutile is higher than ilmenite.
T. Dilmi. U. Wijewardhana, Amila Sandaruwan Ratnayake   +1 more
doaj   +1 more source

Appraisal of Six Natural Mica Reference Materials for In Situ Rb‐Sr Geochronology

Geostandards and Geoanalytical Research, EarlyView.
Key Points Evaluated six natural mica reference materials for in situ LA‐ICP‐MS/MS Rb‐Sr geochronology using geochemical, microstructural and isotopic characterisation. Identified robust primary reference materials: Mount Dromedary biotite (99.37 Ma) and Mica‐Fe biotite (307.75 Ma). La Posta biotite and Högsbo muscovite are suitable secondary reference
Hugo K.H. Olierook, Bruno V. Ribeiro, Janne Liebmann, Kai Rankenburg, Fred Jourdan, Ahmad Redaa, Jarred C. Lloyd, Thomas M. Belgrano, Carlos R. Corella Santa Cruz, Yujin Jegal, Julien Mercadier, Catherine Zimmermann, Jie Yu, Andreas Zametzer, Christopher L. Kirkland, Sarah E. Gilbert, Craig D. Storey, Luc S. Doucet, Isabelle Jones, Louisa Stokes, Thomas Zack, Delia Rösel, Denis Fougerouse, Jonas Kaempf, Priyanjan Datta, Hijas Hameed, Noreen J. Evans, Malcolm P. Roberts, Juraj Farkas, Stijn Glorie, Celia Mayers, R. Adam Frew, Sarah Al Odeh, Chloe E. Roche, Massimo Chiaradia, Alicia M. Cruz‐Uribe, Alan S. Collins, Andreas Karlsson, Anusha Shantha Kumara   +38 more
wiley   +1 more source

Reduction Extraction Kinetics of Titania and Iron from an Ilmenite by H-2-Ar Gas Mixtures

, 2009
Reduction of an ilmenite concentrate as a natural concentration containing 49.78mass% TiO2 and 2796 mass% total Fe by H-2-Ar gas mixtures was investigated from 1073 to 1 273 K.
Wang, Yuming, Tsukihashi, Fumitaka, Matsuura, Hiroyuki, Wang, YM, Yuan, Zhangfu   +4 more
core   +1 more source

Oxygen isotope thermometry and composition of aqueous fluids within the parent body of asteroid (101955) Bennu

Meteoritics &Planetary Science, EarlyView.
Abstract We report on the petrography and oxygen isotopic compositions from in situ analyses of carbonates (Ca‐carbonate, dolomite, and Fe‐rich magnesite), magnetite, and apatite in particles from asteroid Bennu. Using oxygen isotope thermometry of Ca‐carbonate, dolomite, and magnetite, we estimated crystallization temperatures and the oxygen isotopic ...
Gary R. Huss, Kazuhide Nagashima, Elena Dobrică, Alexander N. Krot, Gregory Cane, Zoe E. Wilbur, Timothy J. McCoy, Catherine M. Corrigan, Sara S. Russell, Jessica J. Barnes, Ann N. Nguyen, Harold C. Connolly Jr., Dante S. Lauretta   +12 more
wiley   +1 more source

A Microkrystite from the Australasian Tektite/Microtektite Strewn Field

Meteoritics &Planetary Science, EarlyView.
Abstract Microkrystites are glassy impact spherules. They contain primary crystallites carrying information on the physical and chemical conditions prevailing during vaporization, melting, and ejection in large impact cratering events. We report on the geochemistry and mineralogy down to nanometer scale of the first microkrystite (ODP1144A,14) from the
Matteo Del Rio, Luigi Folco, Matteo Masotta, Ana Černok, Enrico Mugnaioli   +4 more
wiley   +1 more source

Reaction phenomena of iron oxide leaching in an evaporative acid bake reactor [PDF]

, 2012
Includes abstract.Includes bibliographical references.Namakwa Sands is a heavy mineral mining and beneficiation business within Tronox, and produces two major products, zircon (zr02.Si02 99.9%) and rutile (Ti02 99.9%) at a combined annual rate of 140kt ...
Ledgerwood, Jonathan Patrick
core   +1 more source

High-temperature absorption characteristics of potassium by ilmenite oxygen carrier

Meitan xuebao
The synergistic alkali metals fixation potential of Oxygen Carrier Aided Combustion (OCAC) technology has attracted increasing attention. Using the tailings from natural ilmenite after titanium extraction and its individual components Fe2TiO5 and TiO2 as
Yuqi ZHANG, Chun ZHU, Zhen XU, Qing ZHU, Qiang YUAN, Lin LI, Zhenkun SUN, Lunbo DUAN   +7 more
doaj   +1 more source

U–Pb Dating of Cambrian Magmatism in the Pinerolo‐Sanfront Unit, Dora‐Maira Massif (Western Alps)

Terra Nova, EarlyView.
ABSTRACT The Pinerolo‐Sanfront Unit (PSU), the structurally lowest tectonic unit of the Dora‐Maira Massif (Western Alps), has been regarded as a monocyclic unit composed of Permo‐Carboniferous sediments and Permian granitoids that were metamorphosed during the Alpine orogeny.
Francesco De Cesari, Davide Dana, Salvatore Iaccarino, Chiara Montomoli, Alberto Corno, Daniela Rubatto, Rodolfo Carosi   +6 more
wiley   +1 more source

Rare Earth Element Potential in the Araí Rift Metavolcanic, Central Brazil: Gamma‐Ray Signatures, Mineralogy and Exploration Implications

Terra Nova, EarlyView.
ABSTRACT Although central Brazil hosts significant ion‐adsorption rare earth element (REE) deposits associated with A‐type granites, their coeval volcanic counterparts have been largely overlooked as exploration targets. This study demonstrates that acidic metavolcanic rocks of the Araí Group share strong radiometric, geochemical and mineralogical ...
Yuri Ribeiro, Nilson Francisquini Botelho, Valmir da Silva Souza, Diego Guilherme da Costa Gomes   +3 more
wiley   +1 more source

Features of the ore-bearing of the Livoberezhne ilmenite deposit

Мінеральні ресурси України
The Livoberezhne ilmenite deposit is located within the Volodarsk-Volynskyi massif of ilmenite-bearing gabbroid rocks. Industrial concentrations of ilmenite are distributed throughout almost the entire cross-section of the deposit: in the Mesozoic ...
O. A. Ganzha, K. M. Starodubets, Ye. S. Lunov, I. M. Lunova   +3 more
doaj   +1 more source