Results 31 to 40 of about 1,478 (213)
Structural Variations across Wolframite Solid Solutions, (Fe,Mn)WO4
, 2021 The crystal structure of four samples from natural wolframite solid solutions, (Fe,Mn)WO4, was obtained with synchrotron high-resolution powder X-ray diffraction (HRPXRD) data, Rietveld refinements, space group P2/c, and Z = 2. Wolframite solid solutions
Sytle M. Antao, Darren A. Umbsaar
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Fluid Processes of Wolframite-Quartz Vein Systems: Progresses and Challenges
, 2022 Wolframite-quartz vein-type tungsten deposits constitute the world’s major tungsten resources and are integral to tungsten production. A major share of this mineralization product is found in Southeast China, with other significant resources in the
Kai-Han Zhang +5 more
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DISCOVERY AND DEVELOPMENT OF IULTINSKOYE TIN-TUNGSTEN DEPOSIT
Известия высших учебных заведений: Геология и разведка, 2018 The Iultinskoye deposit was discovered 80 years ago in the remote and unexplored region of Chukotka. Discovery and development of the deposit were accompanied by serious difficulties.
V. V. Romanova
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MINERAL FORMS OF TUNGSTEN AT THE POROKHOVSKOE AND YUGO-KONEVSKOE DEPOSITS (SOUTH URALS) [PDF]
МинералогияThe ore hand specimens and technological ore samples from the Porokhovskoe and Yugo-Konevskoe W greisen deposits in the South Urals are studied. The major W minerals of primary ores at both deposits include hübnerite and scheelite.
D.A. Rogov +5 more
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Genetic aspects of Sn, Li, Be, Nb-Ta pegmatites and Sn-W vein deposits of the Damaran orogeny, Namibia [PDF]
Bulletin of the Geological Society of Finland, 1987 The pegmatites of the Northern, Central and Southern tin belts of the Damaran orogeny, which contain tin, lithium, beryllium and niobium-tantalum mineralizations, belong to the Abukuma low pressure metamorphic facies series, or to the intermediate-level ...
J.T. Ollila
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On the Spinodal Decomposition of Wolframite
Zeitschrift für Naturforschung A, 1985 Investigations by transmission electronmicroscopy (TEM) of hydrothermally treated wolframites at 200 °C and 1 kbar exhibit in contrast to untreated samples spinodal decomposition. The scales of modulation for those wolframites are given (λ = 65 - 250 Å). Alongside TEM-investigations, diffraction patterns were determined.
Josef-Christian Buhl +1 more
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Magnetic nature of wolframite MgReO4
Journal of Physics: Conference Series, 2023 Abstract Rhenium oxides belonging to the family AReO4 where A is a metal cation, exhibit interesting electronic and magnetic properties. In this study we have utilized the muon spin rotation/relaxation (µ +SR) technique to study the magnetic properties of the MgReO4 compound.
Nocerino, Elisabetta +10 more
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A study of the separation of wolframite from tin-oxide [PDF]
, 1948 A number of mines in china, Bolivia, England, and other countries contain both tin-oxide and wolframite. Owing to the fact that the specific gravity of tin-oxide and wolframite is so nearly the same, considerable difficulty is experienced in making a ...
Ying, Chih-Wen
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Flotation separation of wolframite from quartz using N-oleoyl sarcosine acid as collector [PDF]
, 2017 In this study the collecting power of N-oleoyl sarcosine acid towards wolframite and quartz was studied using flotation. The adsorption mechanism was also discussed based on the results from adsorption experiments, zeta potential measurements and ...
Xian-Ping, L. +4 more
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Kuangchan zonghe liyong[Objective] The mineral composition of the tungsten ore in Inner Mongolia is complex. Its metallic minerals are mainly scheelite and wolframite, and its non-metallic mineral is mainly fluorite. In the ore, the content of scheelite is slightly higher than
Qin ZENG, Lili FAN, Honggel TONG
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