Applied mineralogy

Petruk, W.

doi:10.1016/b978-044450077-9/50009-2

Cited by 36 publications

(18 citation statements)

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“…8b; cf. Petruk, 2000). The clasts comprise mainly quartz, biotite, chlorite and other phyllosilicates, 1 Rounded up to 5 cm wide non-sulphide spots within the massive sulphides.…”

Section: Massive Sulphide Mineralisation Typesmentioning

confidence: 99%

“…been suggested to occur during metamorphism (Petruk, 2000). However, rounding of pyrite grains and the formation of atoll textures have also been ascribed to modification by ore forming solutions (Eldridge et al, 1983).…”

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confidence: 99%

“…Furthermore, pyrrhotite is documented in diablastic intergrowth with sphalerite, and pyrrhotite and chalcopyrite often show foliated, elongated and schistose textures. These features were ascribed to metamorphism of massive sulphides (Petruk, 2000) (iv) Mattsson and Heeroma (1985) suggested that the formation of magnetite is related to secondary (ore-modifying) events as they observed magnetite bands cross-cutting the banding in the massive sulphides. Similar observations were made in this study.…”

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confidence: 99%

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Lithology and mineralisation types of the Rockliden Zn–Cu massive sulphide deposit, north-central Sweden: Implications for ore processing

Minz

Lasskogen

Wanhainen

et al. 2014

Applied Earth Science

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The Rockliden Zn-Cu volcanic-hosted massive sulphide deposit is located approximately 150 km south of the Skellefte ore district, north-central Sweden. Most of the mineralisation is found at the altered stratigraphic top of the felsic volcanic rocks, which are intercalated in the metamorphosed siliciclastic sedimentary rocks of the Bothnian Basin. Mafic dykes cross-cut all lithological units, including the massive sulphides, at the Rockliden deposit. The relatively high Sb grade of some parts of the mineralisation results in challenges in handling of the Cu-Pb concentrate in the smelting process. The aim of this study is to characterise different host rock units and ore types by their main mineralogy, as well as by their trace mineralogy with focus on the Sb-bearing minerals. Ore types are distinguished largely on the basis of their main base-metal bearing sulphide minerals, which are chalcopyrite and sphalerite. Several Sb-bearing minerals are documented and differences in the trace mineralogy between rock and ore types are highlighted. Based on the qualitative ore characterisation, rock-and ore-intrinsic parameters, such as the pyrite, pyrrhotite and magnetite content of the massive sulphides, the trace mineralogy and its association with base-metal sulphide minerals, are outlined and discussed in terms of relevance to the ore processing.

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“…8b; cf. Petruk, 2000). The clasts comprise mainly quartz, biotite, chlorite and other phyllosilicates, 1 Rounded up to 5 cm wide non-sulphide spots within the massive sulphides.…”

Section: Massive Sulphide Mineralisation Typesmentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

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Lithology and mineralisation types of the Rockliden Zn–Cu massive sulphide deposit, north-central Sweden: Implications for ore processing

Minz

Lasskogen

Wanhainen

et al. 2014

Applied Earth Science

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“…The value of SEM-based image analysis in process mineralogy is well documented (Jones, 1987; King, 1993; Petruk, 2000; Gregory et al, 2013; O´Driscoll et al, 2014). Despite the efficient identification of PGM grains using SEM-based image analysis only, combination with EPMA has at least one significant advantage.…”

Section: Introductionmentioning

confidence: 99%

Efficient and Accurate Identification of Platinum-Group Minerals by a Combination of Mineral Liberation and Electron Probe Microanalysis with a New Approach to the Offline Overlap Correction of Platinum-Group Element Concentrations

et al. 2015

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Identification and accurate characterization of platinum-group minerals (PGMs) is usually a very cumbersome procedure due to their small grain size (typically below 10 µm) and inconspicuous appearance under reflected light. A novel strategy for finding PGMs and quantifying their composition was developed. It combines a mineral liberation analyzer (MLA), a point logging system, and electron probe microanalysis (EPMA). As a first step, the PGMs are identified using the MLA. Grains identified as PGMs are then marked and coordinates recorded and transferred to the EPMA. Case studies illustrate that the combination of MLA, point logging, and EPMA results in the identification of a significantly higher number of PGM grains than reflected light microscopy. Analysis of PGMs by EPMA requires considerable effort due to the often significant overlaps between the X-ray spectra of almost all platinum-group and associated elements. X-ray lines suitable for quantitative analysis need to be carefully selected. As peak overlaps cannot be avoided completely, an offline overlap correction based on weight proportions has been developed. Results obtained with the procedure proposed in this study attain acceptable totals and atomic proportions, indicating that the applied corrections are appropriate.

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“…Flotation plants have acted on this principle, judiciously introducing reducing agents to suppress metal ion release . On the other hand, a process (GalvanoxTM) that exploits galvanic accelerated oxidation to increase dissolution kinetics of bornite by introducing pyrite has also been presented. , Petruk emphasizes that Cu ions are readily generated from more reactive secondary Cu minerals such as chalcocite, which are often present in bornite ores . In other words, unavoidable ions can have sources other than such secondary minerals are present in extremely small amounts.…”

Section: Introductionmentioning

confidence: 99%

New Source of Unavoidable Ions in Bornite Flotation Aqueous Solution: Fluid Inclusions

Deng

Wen

Liu

et al. 2013

Ind. Eng. Chem. Res.

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This study aims to determine the presence and release of fluid inclusions in natural pure bornite while investigating the types, structures, and compositions of such inclusions. This work also measures the total concentrations of Cu (C CuT ), Fe (C FeT ), and Cl − , SO 4 2− , which are released to the bornite aqueous solution from fluid inclusions. The results indicate that numerous fluid inclusions are distributed in isolation or along the crevices in the bornite. The fluid inclusions take on such shapes as long strips and irregular strips, with the body sizes ranging from 3 to 40 μm. Through the crushing and grinding process, the inclusions that are captured from the diagenetic and metallogenic process of bornite would be released to the flotation pulp along with Cu, Fe, Cl − , SO 4 2− , etc. Results indicate that the C CuT and C FeT values in the solution are significantly higher than those from the experimental dissolution. Therefore, results confirm that the release of inclusions is a new source of Cu and Fe ions in the aqueous solution. Moreover, the findings exhibit a new discovery of an unavoidable ion source in the flotation pulp, and the residual position domain after the release of the inclusions causes the difference in bornite surface composition and roughness. The new discovery expands the research objectives and scope in flotation solution chemistry and is significant in the study of flotation theory.

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Applied mineralogy

Cited by 36 publications

References 0 publications

Lithology and mineralisation types of the Rockliden Zn–Cu massive sulphide deposit, north-central Sweden: Implications for ore processing

Lithology and mineralisation types of the Rockliden Zn–Cu massive sulphide deposit, north-central Sweden: Implications for ore processing

Efficient and Accurate Identification of Platinum-Group Minerals by a Combination of Mineral Liberation and Electron Probe Microanalysis with a New Approach to the Offline Overlap Correction of Platinum-Group Element Concentrations

New Source of Unavoidable Ions in Bornite Flotation Aqueous Solution: Fluid Inclusions

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