Sphalerite is the main sulfide ore mineral in the San Pietro skarn and displays variable compositional features (Table S6). On the basis of the Fe contents, …Web
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With most high-quality tungsten ores being exhausted, the enhancement of low-grade scheelite concentrates processing has attracted a great deal of attention. The objective of this study is to develop a method to maximize the recovery tungsten and molybdenum from a low-grade scheelite via a new acid leaching process followed by …Web
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Scheelite is characterized by broad luminescent bands centered at 425 - 435 nm (blue emission) of intrinsic activator (WO 4) 2- groups and impurity (MoO 4) 2- groups.. Those broad bands are attributed to an intrinsic slight distortion of the [WO 4]/ [MoO 4] tetrahedral group.[WO 4] lifetime: 9μs (@ 405nm).. Such strong bands prevent in many cases the …Web
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A high f S 2 condition leads to abundant formation of sulfide minerals (pyrrhotite, bismuthinite), but the absence of sulfide minerals with higher sulfur content …Web
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The layer-like sulfide–scheelite orebodies developed along the intra-strata fractures and form parallel swarms that are generally tens to hundreds of meters in ... We obtained WO 3 and CaO concentrations of 78.18–80.14 wt% and 19.83–20.69 wt% in scheelite from the sulfide–scheelite ore veins, respectively, with other elements having ...Web
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A cluster of coarse-grained scheelite and massive sulphide ore occurs at the border of an aplitic stockwork hosted by a granodioritic breccia . Aplite mainly consists of quartz and feldspar, with epidote alteration. ... The massive sulphide ore is located along the Véronique fault on the southern contact of the granodiorite. Later, late faults ...Web
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The material source and the evolution of ore-forming hydrothermal fluids of Xiaojiashan gold deposits remain controversial. We carried out a mineralogical characteristics analysis, trace elements …Web
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This paper presents Nd-Sr-Pb isotope data on scheelite, inclusion fluids and residues of gangue quartz, and sulfides from the W-Sb-Au ore deposits at Woxi and Liaojiaping (LJP) in the Xuefeng Uplift Belt (XUB), Western Hunan, China. Sm and Nd concentrations in scheelite from Woxi are much lower than in scheelite from LJP and …Web
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In this work, the flotation method was adopted to pre-enrich the In in the Canadian sulfide ore due to its low cost, simple operation and high separation efficiency for fine particles. The findings of this research can provide a basis for the pre …Web
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Separation of scheelite from calcite and fluorite. Commonly used thick slurry high temperature method. First concentrate the pulp to a concentration of 60~70%, then add water glass, heat the pulp to above 80°C, stir for 30-60 minutes, then dilute with water, and flotate scheelite at room temperature. The product in the tank is Fluorite and ...Web
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Scheelite (CaWO4) collected from 37 different ore-deposit settings (orogenic, sediment- and greenstone-hosted, skarn, porphyry, greisen, volcanogenic massive sulfide, breccia, and polymetallic ...Web
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In addition, the positive correlations in the sulphide stage also indicate that ore-forming metals originated from a unified magmatic source. The positive correlations of Cu, Pb, and Zn concentrations in Stage 4 fluids are due to the dilution of low salinity meteoric water, which is consistent with the results of FI microthermometry. ...Web
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Here, the massive sulfide ore body is a part of continuous sulfide accumulation that expands along strike for over 3.1 km ... 42° 41′ E), tungsten mineralization is represented by wolframite, together with cassiterite, scheelite, and …Web
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On the contrary, scheelite, sulphide minerals, and epidote are concentrated in the high-density fraction. The distribution of the hornblende minerals varies. Hornblende is the predominant mineral in the concentrate and tailing in the ore. ... The modeling results are shown in Figure 9 for the scheelite ore, where there is a comparison of the ...Web
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Scheelite and sulfide (molybdenite, sphalerite, and pyrite) separates were collected from drill core samples of quartz-scheelite-carbonate ± sulfides and quartz-sulfides ± muscovite veins, respectively, at the Honghuaerji scheelite deposit (Table 1, Table 3 and Fig. 2). ... The geochemical features of scheelite decipher that the ore …Web
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Type4 scheelite from the skarn ore has patchy CL zones; type5 scheelite shows patchy (core-rim) CL texture and occurs in quartz-sulfide veins that cut massive skarn or skarn sulfide ore. We ...Web
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Scheelite (CaWO 4) is mainly collected through froth flotation.It has significant applications in the manufacturing of alloys and steels. To better understand bubble-scheelite attachment mechanisms, we probed the interaction force between a bubble and a scheelite surface using an atomic force microscope (AFM) and …Web
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Normal sulfide mineral and the common association of the calcic such as calcite, fluorite gangue mineral such as with chalcopyrite, pyrite, magnetic iron ore of scheelite.Head grade is low, fine size, and many employing flotation are reclaimed.Calcic gangue mineral mostly is saline minerals, belongs to half dissolubility mineral, has certain solubility in aqueous, …Web
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Scheelite (CaWO4) collected from 37 different ore-deposit settings (orogenic, sediment- and greenstone-hosted, skarn, porphyry, greisen, volcanogenic massive sulfide, breccia, and polymetallic ...Web
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TA is commonly used as a sulfide ore depressant in practice (Fr Ag A-Corral et al., 2020). ... The existence of PASP hardly affected the adsorption of the collector on the scheelite surface, but it could prevent the collector adsorption on the calcite surface, realizing the efficient flotation separation between scheelite and calcite. ...Web
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We studied three non-sulfide ores with different feed grades and valuables: scheelite, apatite, and fluorite. These were dry-, wet-, and wet conditioned-ground before flotation in a laboratory ...Web
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Petrography, microthermometric measurements and laser Raman spectroscopy of fluid inclusions in quartz grains associated with scheelite indicate that the ore-forming fluid of the tungsten mineralisation in Yangbishan deposit belonged to the moderate-temperature NaCl–H 2 O–CH 4 ±N 2 system. Fluid inclusion analyses indicate …Web
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The Dachang tin-polymetallic district, Guangxi, China, is one of the largest tin ore fields in the world. Both cassiterite-sulfide and Zn–Cu skarn mineralization are hosted in the Mid-Upper Devonian carbonate-rich sediments adjacent to the underlying Cretaceous Longxianggai granite (91–97 Ma). The Lamo Zn–Cu deposit is a typical skarn deposit in …Web
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The Charmitan low-sulphide ore veins are composed of quartz of several generations with sulphide contents in the ore of generally 2-7% only ... veins hosted by the intrusives of the Koshrabad massif contain lower concentrations of sulphides and higher contents of scheelite than those ore structures within the sedimentary sequences ...Web
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Poor recovery from the scheelite gravity separation circuit combined with intermittent chalcopyrite flotation resulted in the tailings containing notable quantities of copper and tungsten, which could potentially be recovered during reprocessing to offset costs. ... Pyrrhotite depression studies with DETA and SMBS on a Ni-Cu sulphide ore. …Web
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The wolframite-scheelite mixed ore containing tin used in this study was obtained from Hunan Shizhuyuan Nonferrous Metals Co., Ltd. The main chemical compositions, major phases and their contents, X-ray diffraction (XRD) patterns and images obtained by mineral liberation analysis (MLA) are shown in Table 1, Table 2, and Fig. 1, …Web
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Scheelite from 25 representative orogenic gold deposits from various geological settings was investigated by EPMA (electron probe micro-analyzer) and LA-ICP-MS (laser ablation-inductively coupled plasma-mass spectrometer) to establish discriminant geochemical features to constrain indicator mineral surveys for gold exploration. …Web
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Sodium sulfide exhibited an excellent ability to promote the adsorption and desorption of sodium oleate on the scheelite surface and from the calcite and fluorite surfaces, thus facilitating the separation of …Web
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byproduct lead from a complex sulfide ore using an acid system at atmospheric pres sure and moderate temperature. The pro posed method consists of--I. Leaching a sulfide ore with an acidic FeC13 solution to form insoluble silver and lead chlorides. A portion of the zinc is also extracted: Ag2S + 2 FeC13 + 2 AgCl (A)Web
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