trace elements in sulfides and magnetite from the ernest

trace elements in sulfides and magnetite from the ernest

Trace elements in disseminated sulfides, magnetite, and ...

Samples of pyrite separates from massive sulphide layers vary stratigraphically in trace-element content, and show an enrichment of many of the elements in the centre of the layers. Trace-element contents of pyrite of massive sulphide deposits, of magnetite from a magnetite deposit, and of disseminated sulphides differ, presumably reflecting different origins.

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Sulfide chemistry and trace element deportment at the ...

2019-9-11 · 57Fe for the other sulfides. Data reduction was done using the IOLITE software package (Paton et al. 2011). 3 Ore mineralogy and texture The Lappberget ore body contains sphalerite, galena, pyrite, pyrrhotite, chalcopyrite and magnetite as the main sulfide and oxide components. Trace amounts (generally

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Trace elements in magnetite as petrogenetic indicators ...

2014-6-10 · We have characterized the distribution of 25 trace elements in magnetite (Mg, Al, Si, P, Ca, Sc, Ti, V, Cr, Mn, Co, Ni, Cu, Zn, Ga, Ge, Y, Zr, Nb, Mo, Sn, Hf, Ta, W, and Pb), using laser ablation ICP-MS and electron microprobe, from a variety of magmatic and hydrothermal ore-forming environments and compared them with data from the literature. We propose a new

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Variation in trace element content of magnetite ...

2012-7-1 · In this paper, we show that the trace element content of magnetite is closely related to the fractionation of the sulfide melt. Furthermore, our data provides an insight into the partitioning of trace elements between sulfide and Fe-oxide phases that crystallize from a sulfide melt, for which there is a paucity of data. 2. Geologic setting

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Trace element geochemistry of magnetite: Implications for ...

2018-9-1 · Compared to hydrothermal disseminated and massive magnetite, the trace element composition of the magmatic-hydrothermal magnetite is characterized by lower Cu = 0.11–1.39 ppm with the average at 0.47 ppm, and Zn = 2.43–1725 ppm with the average at 72 ppm, and Ge = 0.15–3.47 ppm with the average at 1.31 ppm.

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Trace Element Geochemistry of Magnetite from the Fe(‐Cu ...

Magnetite from the Heifengshan and Shuangfengshan Fe deposits has similar normalized trace element spider patterns and cannot be discriminated according to these factors. However, magnetite from the Shaquanzi Fe–Cu deposit has affinity to Factor 2 with lower Mg and Al but higher Zn concentrations, indicating that the ore–forming fluids ...

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Trace-element fingerprints of chromite, magnetite and ...

2015-6-1 · Trace-element heterogeneity in the altered chromites is attributed to serpentinization. The trace-element patterns of magnetite from the massive magnetite bands in the greenstone belt are similar to those from magmatic Fe-Ti-V-rich magnetite bands in layered intrusions, and magnetites from andesitic melts, suggesting that magnetite crystallized ...

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Trace Element Geochemistry of Magnetite from the Fe(‐Cu ...

2014-2-24 · Laser ablation–inductively coupled plasma–mass spectrometry (LA–ICP–MS) was used to determine the trace element concentrations of magnetite from the Heifengshan, Shuangfengshan, and Shaquanzi Fe(–Cu)...

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Mapping of Sulfur Isotopes and Trace Elements in Sulfides ...

2016-10-20 · Constraints on accurate quantitative trace element and sulfur (S) isotope analysis of sulfide minerals, especially pyrite, by laser-ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) remain imperfectly understood at the present time. Mapping of S isotope distributions within a complex sample containing several minerals requires an

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Discriminant diagrams for iron oxide trace element ...

2011-2-8 · Magnetite and hematite are common minerals in a range of mineral deposit types. These minerals form partial to complete solid solutions with magnetite, chromite, and spinel series, and ulvospinel as a result of divalent, trivalent, and tetravalent cation substitutions. Electron microprobe analyses of minor and trace elements in magnetite and hematite from a

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Trace elements in disseminated sulfides, magnetite, and ...

Samples of pyrite separates from massive sulphide layers vary stratigraphically in trace-element content, and show an enrichment of many of the elements in the centre of the layers. Trace-element contents of pyrite of massive sulphide deposits, of magnetite from a magnetite deposit, and of disseminated sulphides differ, presumably reflecting different origins.

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Trace elements in disseminated sulfides, magnetite, and ...

Samples of massive sulfide layers show an enrichment in many minor and trace elements in the central part of layers. Comparison of trace element contents of massive sulfides, magnetite, and disseminated sulfides suggests differences in origin. Trace element contents of samples from various mines suggest regional variations.

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Trace-element fingerprints of chromite, magnetite and ...

The trace-element patterns of magnetite from the massive magnetite bands in the greenstone belt are similar to those from magmatic Fe–Ti–V-rich magnetite bands in layered intrusions, and magnetites from andesitic melts, suggesting that magnetite

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Trace-element fingerprints of chromite, magnetite and ...

2018-4-4 · LA-ICPMS. The in situ trace-element study was conducted on both unaltered chromites and in chromites with core-rim zoning, in order to compare the distribution of trace ele-ments during primary magmatic conditions and second-ary alteration. In addition to chromite, the trace elements of magnetite and sulfides (interstitial to chromite in mas ...

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Trace Element Geochemistry of Magnetite from the Fe(‐Cu ...

Magnetite from the Heifengshan and Shuangfengshan Fe deposits has similar normalized trace element spider patterns and cannot be discriminated according to these factors. However, magnetite from the Shaquanzi Fe–Cu deposit has affinity to Factor 2 with lower Mg and Al but higher Zn concentrations, indicating that the ore–forming fluids ...

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Trace-element fingerprints of chromite, magnetite and ...

Trace-element heterogeneity in the altered chromites is attributed to serpentinization. The trace-element patterns of magnetite from the massive magnetite bands in the greenstone belt are similar to those from magmatic Fe-Ti-V-rich magnetite bands in layered intrusions, and magnetites from andesitic melts, suggesting that magnetite crystallized ...

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Mapping of Sulfur Isotopes and Trace Elements in Sulfides ...

2016-10-20 · Constraints on accurate quantitative trace element and sulfur (S) isotope analysis of sulfide minerals, especially pyrite, by laser-ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) remain imperfectly understood at the present time. Mapping of S isotope distributions within a complex sample containing several minerals requires an

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Trace Element Geochemistry of Magnetite from the Fe(‐Cu ...

2014-2-24 · Laser ablation–inductively coupled plasma–mass spectrometry (LA–ICP–MS) was used to determine the trace element concentrations of magnetite from the Heifengshan, Shuangfengshan, and Shaquanzi Fe(–Cu)...

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(PDF) Ore minerals at the nanoscale - ResearchGate

Trace element concentrations in Cu-(Fe)-sulfides (chalcocite, related Cu 2-x S phases, bornite and chalcopyrite) and pyrite were measured, using

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Trace Elements and Minerals in Fumarolic Sulfur: The Case ...

2018-3-20 · Native sulfur deposits on fumarolic fields at Ebeko volcano (Northern Kuriles, Russia) are enriched in chalcophile elements (As-Sb-Se-Te-Hg-Cu) and contain rare heavy metal sulfides (Ag 2 S, HgS, and CuS), native metal alloys (Au 2 Pd), and some other low-solubility minerals (CaWO 4 , BaSO 4 ). Sulfur incrustations are impregnated with numerous particles of fresh

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Trace elements in disseminated sulfides, magnetite, and ...

Samples of pyrite separates from massive sulphide layers vary stratigraphically in trace-element content, and show an enrichment of many of the elements in the centre of the layers. Trace-element contents of pyrite of massive sulphide deposits, of magnetite from a magnetite deposit, and of disseminated sulphides differ, presumably reflecting different origins.

Read More
Trace elements in disseminated sulfides, magnetite, and ...

Samples of massive sulfide layers show an enrichment in many minor and trace elements in the central part of layers. Comparison of trace element contents of massive sulfides, magnetite, and disseminated sulfides suggests differences in origin. Trace element contents of samples from various mines suggest regional variations.

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COMPOSITIONS OF MAGNETITE AND SULFIDES FROM

2010-4-2 · Variations in trace element compositions of magnetite may record specific geologic processes such as fluid temperature, fluid origin, redox conditions, or pH. Similarly, the partitioning of elements between magnetite and coexisting minerals such as carbonate, sulfides, titanite, or quartz may be a useful indicator of geologic process.

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Sulfide chemistry and trace element deportment at the ...

2019-9-11 · 57Fe for the other sulfides. Data reduction was done using the IOLITE software package (Paton et al. 2011). 3 Ore mineralogy and texture The Lappberget ore body contains sphalerite, galena, pyrite, pyrrhotite, chalcopyrite and magnetite as the main sulfide and oxide components. Trace amounts (generally

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Discriminant diagrams for iron oxide trace element ...

2011-12-1 · magnetite from Ernest Henry, and concluded that the difference in magnetite chemistry probably results from mineral equilibrium at the site of magnetite deposition. Singoyi et al. (2006) measured the trace element composition of magnetite from selected VMS, skarn, IOCG, and Broken Hill-type clastic-dominated Pb-Zn

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Trace-element fingerprints of chromite, magnetite and ...

2018-4-4 · LA-ICPMS. The in situ trace-element study was conducted on both unaltered chromites and in chromites with core-rim zoning, in order to compare the distribution of trace ele-ments during primary magmatic conditions and second-ary alteration. In addition to chromite, the trace elements of magnetite and sulfides (interstitial to chromite in mas ...

Read More
Trace Element Geochemistry of Magnetite from the Fe(‐Cu ...

2014-2-24 · Laser ablation–inductively coupled plasma–mass spectrometry (LA–ICP–MS) was used to determine the trace element concentrations of magnetite from the Heifengshan, Shuangfengshan, and Shaquanzi Fe(–Cu)...

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CorpusUL: Trace element composition of igneous and ...

2020-1-14 · Trace element compositions of igneous and hydrothermal magnetite from nineteen well-studied porphyry Cu ± Au ± Mo, Mo, and W-Mo deposits, combined with partial least squares-discriminant analysis (PLS-DA), were used to investigate the factors controlling magnetite chemistry during igneous and hydrothermal processes, as divided by magmatic ...

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中国科学院机构知识库网格系统: Trace element composition ...

Trace element composition of igneous and hydrothermal magnetite from porphyry deposits: Relationship to deposit subtypes and magmatic affinity[J]. Economic Geology,2019,114(5):917–952. APA

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Trace Elements and Minerals in Fumarolic Sulfur: The Case ...

2018-3-20 · Native sulfur deposits on fumarolic fields at Ebeko volcano (Northern Kuriles, Russia) are enriched in chalcophile elements (As-Sb-Se-Te-Hg-Cu) and contain rare heavy metal sulfides (Ag 2 S, HgS, and CuS), native metal alloys (Au 2 Pd), and some other low-solubility minerals (CaWO 4 , BaSO 4 ). Sulfur incrustations are impregnated with numerous particles of fresh

Read More