Results 41 to 50 of about 1,478 (213)
Rare metal granites and related rocks of the Ukrainian shield [PDF]
Bulletin of the Geological Society of Finland, 1993 Two rare metal leucocratic granites, Perga and Kamennaya complexes, can be distinquished on the Ukrainian shield. The Perga complex consists of medium- and coarse-grained, mainly porphyric, biotite, riebeckite and aegirine granites, granite porphyries ...
K.Y. Esipchuk +2 more
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Observation of fluid inclusions in wolframite from Panasqueira, Portugal
, 1988 Infrared microscopy allows the observation of fluid inclusions in otherwise opaque minerals such as wolframite. In wolframite from Panasqueira, Portugal, liquid-rich two-phase inclusions and vapor-rich inclusions are both abundant.
Robinson-Cook, Sylveen +2 more
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Geofluids, 2017 Wolframite is the main ore mineral at the vein-type tungsten deposits in the Nanling Range, which is a world-class tungsten province. It is disputed how wolframite is precipitated at these deposits and no one has yet studied the links of the mechanical ...
Xiangchong Liu, Huilin Xing, Dehui Zhang
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Química Nova, 2012 We report results of the efficiency of tungsten extraction from wolframite concentrate (containing 61.5 wt % WO3) from the Igarapé Manteiga mine (state of Rondônia, Brazil) through acid leaching with strong mineral acids at 100 ºC and 400 rpm for 2-4 h ...
Jéssica Frontino Paulino +4 more
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Small, EarlyView.This review establishes a mechanism‐guided framework for catalyst design in electrochemical, photocatalytic, and photoelectrochemical ammonia oxidation. By correlating catalyst structure, reaction mechanisms, catalytic performance, and device‐level architectures, it highlights rational engineering strategies and future directions toward efficient ...
Dong Hyun Heo +2 more
wiley +1 more source
Flotation Mechanism of Wolframite with Varied Components Fe/Mn
, 2016 Wolframite is a series of minerals belonging to the isomorphic (Fe, Mn)WO with varied Fe/Mn ratios, for which the floatability changes with its composition.
Qiu, Xianyang +4 more
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, 2022 The Baishitouwa deposit is a medium-scale quartz–wolframite vein-type deposit in the southern Great Xing’an Range tungsten (W) belt. The W mineralization occurs mainly as veins and dissemination within the mica schist of the Mesoproterozoic ...
Wei Xie +11 more
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Advanced Functional Materials, Volume 36, Issue 21, 12 March 2026.Cu‐based catalysts as a cornerstone in advancing sustainable energy technologies are fully reviewed in this manuscript, highlighting their potential in photo‐ and electrocatalysis. It includes metallic copper, copper oxides, copper sulfides, copper halide perovskites, copper‐based metal–organic frameworks (MOFs), and covalent organic frameworks (COFs),
Jéssica C. de Almeida +16 more
wiley +1 more source
Separation of a Tungsten-tin Rough Concentrate by Flotation-hydrometallurgy Combined Process
Kuangchan zonghe liyong[Objective] To achieve the effective separation of useful minerals from gangue, by taking advantage of the difference in specific gravity between cassiterite and gangue, tungsten was also enriched in the crude concentrate of tin through gravity ...
Shuai WANG +4 more
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