Minerals | Free Full-Text | Challenges Related to …
In order to increase the recovery of PGMs by flotation, it is necessary to optimise the liberation of the key minerals in which the platinum group elements (PGEs) are contained which include …
Platinum Group Magnetite
Platinum-group element distribution in the Main Zone and …
The Bushveld Complex of South Africa (Fig. 1) contains the world's largest resource of platinum-group elements (Vermaak, 1995) and a large portion of the world's V and Ti resources (Goldberg et al., 1992).Most of the platinum-group element (PGE) resources are found in narrow layers, known as reefs, in the lower third of the intrusion, …
Platinum-group element geochemistry of the Zhuqing Fe-Ti …
Platinum-group element (PGE) geochemistry combined with elemental geochemistry and magnetite compositions are reported for the Mesoproterozoic …
Platinum group element enriched hydrothermal magnetite …
Interaction of a PGE-Fe-Cl rich fluid with clinopyroxene and olivine increased the fluids pH and decreased PGE and Fe solubility depositing a PGE enriched magnetite within the …
Van Treeck, C.J., 2009
Platinum group element enriched hydrothermal magnetite of the Union Bay Alaska-type ultramafic intrusion, southeast Alaska. Authors: Van Treeck, C.J. ... Magnetite veins with a formation temperature of less than 600 degrees C are surrounded by an alteration envelope of hydrous silicates that vary with temperature and contain appreciable amounts ...
Magnetite : Properties, Occurrence, Formation, Deposits
Magnetite is rock mineral and one of the most important iron ore minerals with chemical formula is iron(II,III) oxide, Fe2+Fe3+2O4 .It also as the name magnetic minerals to attracted to a magnet. It is the most magnetic natural occuring minerals in the World. Small grains of magnetite occur in almost all igneous and metamorphic rocks.. …
Magnetite project under way in Bushveld Complex
The DMS magnetite project is described by Ironveld CEO Martin Eales as being beneficial for its Ironveld Mining subsidiary in terms of reducing overall average mining costs and, in time, likely ...
Platinum-group element behavior in the lower part of the …
Analytical data for the platinum-group elements (PGE) and gold on 17 samples from sulfide-mineralized and -unmineralized rocks of the lower portion of the upper zone and two samples from the main zone of the eastern Bushveld Complex are presented. Almost all samples contain less than 100 ppb total PGE, indicating that the sulfide-enriched layers …
Platinum-group minerals in the Skouries Cu-Au (Pd, Pt, Te) …
The platinum-group minerals in Elatsite and Santo Tomas II (Tarkian et al., 2003, Tarkian and Koopmann, 1995) are also found in chalcopyrite-bornite-magnetite assemblages as inclusions in chalcopyrite. In contrast to these deposits the majority of platinum-group minerals in Skouries are present as discrete crystals on the edge of …
Orthomagmatic Mineral Deposits | SpringerLink
Crystallisation of basic magmas can be accompanied by syngenetic concentration of ore minerals, which can lead to the formation of economic ore deposits of chromite, titanian magnetite, ilmenite, pentlandite, chalcopyrite and platinum group minerals (PGM).
Is Platinum Magnetic? (No. It Isn't) | Earth Eclipse
Platinum is a precious metal with a bright, silvery-white color. Its name comes from the Spanish word "platina," meaning little silver. Platinum is a transition metal in group 10 on the periodic table. Its atomic number is 78. These metals are also referred to as"the platinum group metals."
Platinum, palladium and gold leaching from magnetite ore, …
DOI: 10.1016/J.HYDROMET.2016.06.009 Corpus ID: 100396902; Platinum, palladium and gold leaching from magnetite ore, with concentrated chloride solutions and ozone @article{Torres2016PlatinumPA, title={Platinum, palladium and gold leaching from magnetite ore, with concentrated chloride solutions and ozone}, author={Robinson …
Platinum-group element behavior in the lower part of the …
Incompatibility follows the sequence Ir < Rh < Ru < Pd < Pt, with Pt being approximately eight times more incompatible than Ir. Rocks below and above the main magnetite layer are characterized by two different PGE patterns which are seen as the effect of a magma-mixing event which resulted either from a breakdown of density …
Platinum and gold placer from Tugidak Island, Alaska: Platinum-group …
Ten percent of the alloy grains contain a large variety of platinum-group minerals (PGM). Inclusions of cuprorhodsite, malanite, cuproiridsite, laurite, erlichmanite, cooperite, braggite, bowieite, kashinite, miassite, hollingworthite, irarsite, sperrylite, stillwaterite, genkinite, stibiopalladinite, keithconnite, zvyagintsevite, and probable ...
Platinum-group element distribution in the Main Zone and …
The first report of platinum-group minerals in magnetite-bearing gabbro, freetown layered complex, Sierra Leone: Occurrences and genesis. J. Bowles H. Prichard S. Suárez P. Fisher. Geology. 2013; Platinum-group minerals (PGM) have been located in magnetite-bearing gabbroic rocks of the Freetown Layered Complex, Sierra Leone for …
Platinum-group element distribution in the Main Zone and …
The platinum-group element (PGE) contents of the upper portions of the Bushveld Complex were investigated with three questions in mind: (a) In natural …
Recovery of platinum group metals using magnetic
Fe 3 O 4 @PEG@Cyphos® IL 101 sorbent was synthesized for magnetic solid-phase extraction of platinum group metals from technological solutions. A single step method has been developed for the synthesis, which includes the formation of magnetite nanoparticles, their coating with polymer shell and modification with IL.
Occurrence and magmatic origin of platinum-group …
Platinum-group elements (PGEs) are typically hosted in the base metal sulfides (BMS) and platinum-group minerals (PGMs) of magmatic Ni-Cu-(PGE) sulfide deposits. The PGM may crystallize directly from sulfide melt, via exsolution from the BMS on sub-solidus cooling or recrystallization from them during metamorphism and …
The first report of platinum-group minerals in magnetite
Platinum-group minerals (PGM) have been located in magnetite-bearing gabbroic rocks of the Freetown Layered Complex, Sierra Leone for the first time.
THE FIRST REPORT OF PLATINUM-GROUP MINERALS IN …
Platinum-group minerals (PGM) have been located in magnetite-bearing gabbroic rocks of the Freetown Layered Complex, Sierra Leone for the first time.
Occurrence model for magmatic sulfide-rich nickel-copper-(platinum …
Magmatic sulfide deposits containing nickel (Ni) and copper (Cu), with or without (±) platinum-group elements (PGE), account for approximately 60 percent of the world's nickel production. Most of the remainder of the Ni production is derived from lateritic deposits, which form by weathering of ultramafic rocks in humid tropical conditions.
Platinum-group minerals and Fe–Ni minerals in the …
Complex assemblages consisting of native iron + pentlandite, pentlandite + heazlewoodite + magnetite, heazlewoodite + magnetite + platinum-group minerals (PGM), and millerite ± heazlewoodite are associated with three types of altered chromites (partly altered chromite, double-rimmed chromite, and porous chromite) discovered in …
The effect of platinum-group minerals on differentiation of platinum …
1. Introduction. Platinum-group elements (PGE) are widely used in tracing various geological processes, such as the origin and evolution of mantle-derived silicate melts and the formation of magmatic sulfide deposits (Barnes and Ripley, 2016; Harvey and Day, 2016).Magmatic sulfide deposits, including Cu-Ni-PGE deposits and PGE deposits, …
Platinum-group element behavior in the lower part of the …
Analytical data for the platinum-group elements (PGE) and gold on 17 samples from sulfide-mineralized and -unmineralized rocks of the lower portion of the …
Mineralogy and geochemistry of magnetite in the Zhdanov …
Mineralogy and geochemistry of magnetite in the Zhdanov Ni-Cu-(PGE) deposit in the Pechenga ore field, Russia: Implications for the formation of magmatic sulfide ores ... Changes in sulfides and platinum-group minerals with the degree of alteration in the Roby, Twilight, and High Grade Zones of the Lac des Iles Complex, Ontario. Canada ...
Platinum-group elements in the oxide layers of the Hongge …
Platinum-group elements in the oxide layers of the Hongge mafic–ultramafic intrusion, Emeishan Large Igneous Province, SW China ... The magnetite-rich layers of the Hongge intrusion have primitive mantle-normalized PGE patterns similar to that of the Emeishan picritic lavas but are characterized by much lower PGE abundances than the …
Platinum and gold placer from Tugidak Island, Alaska: …
High-grade platinum-rich magnetic separate and accompanying black sand from the southern beach placer of Tugidak Island were studied using electron …
Platinum-group element geochemistry of the layered
The platinum group mineral (PGM) assemblages vary only between textural types, and not between inclusions and matrix, being dominated tellurides in all rock types.
Merensky-type platinum deposits and a reappraisal of …
The Merensky-type platinum deposits occur as thin, continuous layers of sulphide- and chromite-bearing silicate rocks anomalously enriched in the platinum group elements (PGE; Os, Ir, Ru, Rh, Pt ...
Platinum‐group Element Geochemistry of Magnetite from …
The concentrations of platinum‐group elements (PGE) have been analyzed in primary magmatic magnetite samples from the Zhireken, Shakhtama and Aksug porphyry Cu‐Mo deposits (Siberia, Russia) by laser ablation‐inductively coupled plasma mass spectrometry to determine the range of PGE contents in magnetites and to check whether magnetite …
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