Results 31 to 40 of about 39,718 (301)

Influence of palaeoweathering on trace metal concentrations and environmental proxies in black shales [PDF]

, 2017
The mineralogical and chemical compositions of Lower Carboniferous (Tournaisian) marine black shale from the Kowala quarry, the Holy Cross Mountains, Poland, were investigated.
Agnieszka Pisarzowska, Algeo, Algeo, Algeo, Allan, Altabet, Altabet, Anbar, Anthony S. Cohen, Arkadiusz Derkowski, Arnold, Arthur, Averbuch, Baker, Barling, Bauersachs, Behar, Berkowski, Berner, Bolton, Bond, Brantley, Brumsack, Chadima, Chen, Clayton, Clayton, Dalai, Derkowski, Dias, Dickson, Duan, Erickson, Faure, Franke, Freudenthal, Frimmel, Georgiev, German, Goldberg, Gong, Grosjean, Hannigan, Hatch, Helz, Huerta-Diaz, Immenhauser, Jaffe, Jan Środoń, Joachimski, Jones, Keller, Kolowith, Kump, Landais, Lehmann, Leszek Marynowski, Lev, Leythaeuser, Liermann, Littke, Liu, Lo, Lyons, Ma, Macko, Macko, Marynowski, Marynowski, Marynowski, Marynowski, Marynowski, Marynowski, McArthur, McCarty, Michał Rakociński, Morford, Mort, Möbius, Nägler, Obreht, Pearce, Pearce, Perkins, Petsch, Peucker-Ehrenbrink, Pollack, Pope, Popp, Popp, Poulson, Pujol, Rachidi, Racka, Racki, Racki, Rafał Szaniawski, Reitz, Rimmer, Rimmer, Riquier, Rooney, Ross, Rudnick, Sachs, Sackett, Saino, Schmitz, Schoepfer, Siebert, Siebert, Slomp, Szaniawski, Szaniawski, Szulczewski, Tamamura, Torsvik, Tribovillard, Tribovillard, Tulipani, Tuttle, Wignall, Wildman, Williams, Yu, Zwing, Śliwiński, Środoń, Środoń   +128 more
core   +1 more source

How and when do Pt- and Pd-semimetal minerals crystallize from saturated sulfide liquids?

Frontiers in Earth Science
Platinum and Pd-arsenides, antimonides, tellurides, bismuthinides, and sulfides are the major hosts of Pt and Pd in magmatic and hydrothermal Cu-Ni-sulfide ores.
Hassan M. Helmy, Roman Botcharnikov, Chris Ballhaus, Stephan Buhre   +3 more
doaj   +1 more source

INTERGROWTHS OF PLATINUM GROUP MINERALS FROM THE MIASS PLACER ZONE (SOUTH URALS) AND THEIR PRIMARY SOURCES [PDF]

Минералогия, 2016
Twenty four platinum group minerals (PGMs) were found in the Kialim and Maly Iremel gold placers of the Miass placer zone, South Urals. Rhodarsenite, bowieite, cuprorhodiste, and xingzhongite(?) were found in the Urals for the first time.
V.V. Zaykov, I.Yu. Melekestseva, V.A. Kotlyarov, E.V. Zaykova, Yu.D. Kraynev   +4 more
doaj  

Phase Analysis of Pt, Pd and Au in Black Rock-type Platinum Group Element Minerals by ICP-MS

Yankuang ceshi, 2017
Black rock as an important carrier of platinum group elements was discovered in recent years. Due to the multiple origins and complex mineralization, the distribution and occurrence of platinum group elements in black rock are not clear, which is also ...
LIAN Wen-li, LAI Xin-ze, LIU Jun, ZHANG Jin-kuang, YU Ya-hui, WANG Ming-jun, SUN Yong, WANG Lin   +7 more
doaj   +1 more source

Asteroid resource map for near-Earth space [PDF]

, 2011
Most future concepts for the exploration and exploitation of space require a large initial mass in low Earth orbit. Delivering this required mass from the Earth’s surface increases cost due to the large energy input necessary to move mass out of the ...
McInnes, Colin, Sanchez Cuartielles, Joan-Pau   +1 more
core   +1 more source

An Investigation into the Theft of Concentrates and Their Upgrading to Saleable Platinum-Products

Geosciences, 2018
Over the years the theft of material from platinum producers has mainly taken place from high-grade areas such as the precious- and base-metal refineries and the converter and smelting operations.
Robert Schouwstra, Johan Mocke, Michael Duncan, Siksha Bramdeo, Yolanda Scharneck   +4 more
doaj   +1 more source

Platinum-group elements, S, Se and Cu in highly depleted abyssal peridotites from the Mid-Atlantic Ocean Ridge (ODP Hole 1274A): Influence of hydrothermal and magmatic processes [PDF]

, 2013
Highly depleted harzburgites and dunites were recovered from ODP Hole 1274A, near the intersection between the Mid-Atlantic Ocean Ridge and the 15°20′N Fracture Zone.
A Büchl, A Büchl, A Delacour, A Holzheid, A Luguet, A Luguet, A Luguet, A Luguet, A Peregoedova, AS Bell, BW Mountain, C Bockrath, C Marchesi, C-TA Lee, C-Z Liu, Carlos J. Garrido, CH Gammons, CL Peach, Claudio Marchesi, CS Finnigan, D Acken van, D Savard, DG Pearson, DG Pearson, E Aldanmaz, F Klein, Fernando Gervilla, G Delpech, H Becker, H Becker, H Palme, H Paulick, HM Helmy, HM Prichard, HSC O’Neill, J Escartín, J Escartín, J Harvey, J Harvey, J-P Lorand, J-P Lorand, J-P Lorand, J-P Lorand, J-P Lorand, J-P Lorand, J-P Lorand, J-P Lorand, J-P Lorand, JA Mavrogenes, Jason Harvey, JC Alt, JC Alt, JC Alt, JE Snow, JE Snow, Jean-Pierre Lorand, JH Crocket, JM Brenan, JM Brenan, José María González-Jiménez, JW Morgan, K Hanghøj, Károly Hidas, L Rose-Weston, M Cannat, M Fischer-Gödde, M Godard, M Rehkämper, M Seyler, M Yamamoto, ME Fleet, ME Fleet, MR Handler, MR Handler, N Shirai, O Alard, O Alard, P Pan, R Shi, ROC Fonseca, S König, S-J Barnes, SA Fellows, SA Wood, SA Wood, SA Wood, SJ Barnes, T Fujiwara, T Meisel, T Richardson, VJM Salters, W Bach, W Bach, WD Maier, WF McDonough, Y Xiong, Z Wang, Z Xiao   +97 more
core   +1 more source

Four‐Point Bending Tests at High Temperatures on Commercial MgO‐C Refractory Bricks with and Without Recyclate Considering Different Carbon Contents

Advanced Engineering Materials, EarlyView.
Four‐point bending tests are conducted in an argon atmosphere on commercial MgO‐C brick grades with and without MgO‐C recyclate from room temperature up to 1300 °C. No detrimental effect of the MgO‐C recyclates on bending strength is found. Instead, a decisive influence of the total carbon content is observed, with lower total carbon contents ...
Alexander Schramm, Lukas Knöchel, Thomas Schemmel, Christos G. Aneziris, Anja Weidner, Horst Biermann   +5 more
wiley   +1 more source

Noble metal mineralization in apatite titanomagnetite ores of the Suroyam massif (Middle Urals)

Georesursy, 2020
The mineralogical composition of apatite-titanomagnetite clinopyroxenites of the Suroyam massif, characterized by stable elevated contents of platinum group elements with the leading role of palladium, has been studied.
Dmitry E. Saveliev, Ivan A. Blinov
doaj   +1 more source

Platinum Group Minerals in Eastern Brazil

Platinum Metals Review, 2005
Brazil does not have working platinum mines, nor even large reserves of the platinum metals, but there is platinum in Brazil. In this paper, four massifs (mafic/ultramafic complexes) in eastern Brazil, in the states of Minas Gerais and Ceará, where platinum is found will be described.
openaire   +2 more sources