Results 91 to 100 of about 14,846 (227)

Sulfide breccias from the Semenov-3 hydrothermal field, Mid-Atlantic Ridge: authigenic mineral formation and trace element pattern [PDF]

, 2018
The aim of this paper is the investigation of the role of diagenesis in the transformation of clastic sulfide sediments such as sulfide breccias from the Semenov-3 hydrothermal field (Mid-Atlantic Ridge).
Artemyev, Dmitry, Beltenev, Victor, Danyushevsky, Leonid, Kotlyarov, Vasily, Large, Ross, Maslennikov, Valery, Maslennikova, Svetlana, Melekestseva, Irina, Nimis, Paolo, Rozhdestvenskaya, Irina, Safina, Nataliya, Toffolo, Luca   +11 more
core   +3 more sources

Formation Conditions of Unusual Extremely Reduced High-Temperature Mineral Assemblages in Rocks of Combustion Metamorphic Complexes

Crystals
New data, including Raman spectroscopy, characterize unusual mineral assemblages from rocks of the Naylga and Khamaryn–Khyral–Khiid combustion metamorphic complexes in Mongolia.
Igor S. Peretyazhko, Elena A. Savina
doaj   +1 more source

A spatially continuous magnetization model for Mars [PDF]

, 2005
[1] Using a three-component magnetic field data set at over 100,000 satellite points previously compiled for spherical harmonic analysis, we have produced a continuously varying magnetization model for Mars.
Acuña, Acuña, Albee, Arkani-Hamed, Arkani-Hamed, Arkani-Hamed, Arkani-Hamed, Arkani-Hamed, Arkani-Hamed, Arkani-Hamed, Cain, Christensen, Christensen, Connerney, Connerney, Dunlop, Elkins-Tanton, Greeley, Hood, Hynek, Jackson, Johnson, K. A. Whaler, Kiefer, Klingelhöfer, Langlais, Langlais, Lemoine, Maus, Maus, McEnroe, McEnroe, Neumann, Nimmo, Nimmo, Parker, Parker, Parker, Parker, Press, Purucker, Purucker, Purucker, Ravat, Rieder, Robinson, Rochette, Rochette, Runcorn, Schultz, Shure, Smith, Stevenson, Walker, Wessel, Whaler, Whaler, Whaler, Whaler, Yoder, Zuber   +60 more
core   +2 more sources

Potential for stratiform base-metal sulphides in SW England [PDF]

, 2004
The British Geological Survey (BGS) has recently re-evaluated the potential for stratiform base-metal sulphide mineralisation in Devon and east Cornwall (Rollin et al., 2001) (Figure 1). On the basis of their stratigraphy and tectonic setting the Lower
Benham, A.J., Gunn, A.G., McEvoy, F.M., Rollin, K.E.   +3 more
core  

CHEMICAL COMPOSITION AND TRACE ELEMENT PATTERN OF A PYRRHOTITE-PYRITE NODULE FROM THE DERGAMYCH CO-BEARING MASSIVE SULFIDE DEPOSIT, SOUTH URALS [PDF]

Минералогия, 2018
Distribution of trace elements of pyrrhotite-pyrite nodule from sulfide-serpentinite «gravelites» of the Dergamysh Co-bearing massive sulfide deposit is studied using LA ICP MS method. The nodule is zonal with a central porous core composed of pyrrhotite
I.Yu. Melekestseva, V.V. Maslennikov, N.P. Safina, D.A. Artemyev   +3 more
doaj  

On the Separation of Pyrrhotite and Sphalerite

FLOTATION, 1969
The depression of pyrrhotite containing sphalerite is very difficult on account of the copper ion activation during the zinc flotation process. Accordingly, the mineral particles to be floated by the copper ion activation are so many that the flotation machine overloads.
Shigeru MUKAI, Yoshitaka NAKAHIRO
openaire   +2 more sources

Copper mineral occurrences in the Wrangell Mountains-Prince William Sound area, Alaska [PDF]

, 1971
On January 9, 1970, the U.S. Bureau of Mines entered into an agreement with the University of Alaska based upon a proposal submitted by the Mineral Industry Research Laboratory.
Grybeck, D.G., Heiner, L.E., Wolff, E.N.
core  

Corrosion Behavior of Carbon Steel with Pearlite-Ferrite Microstructure in Water-Saturated Supercritical H2S/CO2 Environment

International Journal of Electrochemical Science, 2018
The corrosion characteristics of carbon steel with pearlite-ferrite microstructure in water-saturated supercritical H2S/CO2 environment are analyzed. The whole corrosion process is divided into three stages, the grain shape and morphology of corrosion ...
Chi Yu, Hongwei Wang, Xiuhua Gao
doaj   +1 more source

Fe-Ni Sulphides as Indicators of Alteration in CM Chondrites [PDF]

, 2007
This study looks at the sulphide abundance and composition of Fe-Ni sulphide grains in 12 CM chondrites to determine an alteration sequence for these ...
Bullock, E. S., Gounelle, M., Grady, M., Russell, S. S.   +3 more
core  

Hugoniot data for pyrrhotite and the Earth's core [PDF]

, 1984
New shock wave Hugoniot data for pyrrhotite (Fe_(0.9S)) now describe the equation of state to nearly twofold compression at a maximum pressure of 274 GPa.
Ahrens, Thomas J., Brown, J. Michael, Shampine, Dennis L.   +2 more
core   +1 more source