A series of experiments was designed to assess the relative efficacy of various dust suppressants to suppress PM 10 emissions from nepheline syenite tailings. The
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A series of experiments was designed to assess the relative efficacy of various dust suppressants to suppress PM 10 emissions from nepheline syenite tailings. The
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controlling fugitive dust emissions from the tailings ponds of UNIMIN Canada, a mining company that extracts and produces nepheline syenite (feldspar) at two adjacent sites
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2020.6.25 A series of experiments was designed to assess the relative efficacy of various dust suppressants to suppress PM10 emissions from nepheline syenite
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2020.4.1 Photographs of selected rocks showing minerals in thin sections of selected rocks for (A) Junguni nepheline syenite {JUN-004}; (B) Tundulu nepheline syenite
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INVESTIGATION OF FUGITIVE DUST EMISSIONS FROM NEPHELINE SYENITE MINE TAILINGS NEAR NEPHTON, ONTARIO Damilare Immanuel Ogungbemide A set of
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Nepheline syenite is a holocrystalline plutonic rock that consists largely of nepheline and alkali feldspar. [1] The rocks are mostly pale colored, grey or pink, and in general
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2023.1.1 A genetic link between the mineralized nepheline syenite, nepheline syenite pegmatite, and the altered nepheline syenite is suggested by: (1) their similar
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1998.8.1 The Ulindi and Ilomba nepheline syenites were derived by nepheline, pyroxene, and titanite fractionation of a basanite–nephelinite magma, whereas the
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ABSTRACT. The present study aims to assess the ability of nepheline syenite in removing the environmental pollution of Ag (I) and Pb (II).The characterisation of nepheline
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2023.4.23 Nepheline – USGS Mineral Specimens. Nepheline is the most common feldspathoid mineral in the world, its name from the Greek word nephele, which means “cloud” a reference to the fact that the
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2006.2.7 Nepheline syenite is a white to light grey medium-grained igneous rock. It consists mostly of soda feldspar, nepheline and potash feldspar, accessory magnesium and iron-rich minerals. The Canadian nepheline syenite industry began in 1932 when claims were staked on Blue Mountain near Peterborough, Ontario, where it is still produced.
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2021.10.21 However, silica-oversaturated rocks (quartz syenite and syenite granite) situated north of the complex were formed by the magma with high differentiation, contaminated by the crust materials according to the εNd(t) values (from −0.7 to −1.5 and from −4.5 to −4.9) of nepheline and biotite syenite as well as syenite granite and quartz
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2019.11.27 The dominant substitution scheme for the BGM from REE-rich lithologies related to the Keivy alkali granite-nepheline syenite complex. The boundaries between 'britholite', 'calciobritholite', and ...
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Using wind tunnel measurements, the combined influence of relative humidity and temperature (represented by the absolute matric potential, ) on dust emission was quantified and modelled. About 300 experimental runs were conducted under various conditions of wind speed (4.5-6.25 ms), temperature (0-30C) and relative humidity (10-70%).
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2021.7.6 Minerals 2021, 11, 734 3 of 10 syenite with CaCl2 at 900 C. Danjun [18] suggested sintering with an excess 5–10% of sodium carbonate at 760–880 C for 1.0–1.5 h.Although such processes would provide high Al extraction, the high energy consumption and CO2 footprint that derive from the thermal treatment step are of great concern.
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2021.7.6 The increasing demand for aluminum in conjunction with the limited available bauxite deposits in Europe results in the dire need for the evaluation of alternative raw materials for the whole value chain of alumina production. The present paper focuses on the possible use of nepheline syenite, originated as a mine byproduct, in alumina
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nepheline syenite, medium- to coarse-grained intrusive igneous rock, a member of the alkali-syenite group (see syenite) that consists largely of feldspar and nepheline.It is always considerably poorer in silica and richer in alkalies than granite.The extraordinarily varied mineralogy of the nepheline syenites and their remarkable variation in habit,
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2019.11.29 The development of apatite and rare-metal deposits of the Khibiny and Lovozero—the world’s largest ultrabasic massifs located in the Kola Alkaline Province—is accompanied by accumulation of huge amounts of sandy tailings dumps, about half consisting of nepheline. These tailings, on the one hand, pose a real threat of
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2021.7.9 Some silicate rocks are a rich source of potassium (K), with the possibility for use in agriculture. The present study aimed to evaluate the agronomic efficiency index (AEI) of nepheline syenite (NS) and phonolite (PN) rocks in comparison with potassium chloride (KCl) as a K source in maize production. An experiment was conducted in a
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J. Wayne Boulton. A series of experiments was designed to assess the relative efficacy of various dust suppressants to suppress PM10 emissions from nepheline syenite tailings. The experiments were ...
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A set of experiments was designed to investigate the factors—atmospheric and surficial—controlling fugitive dust emissions from the tailings ponds of UNIMIN Canada, a mining company that extracts and produces nepheline syenite (feldspar) at two adjacent sites (Nephton and Blue Mountain) located north of Havelock, Ontario. Using wind tunnel
Read MoreWe as supplier shall not be held liable for any damage resulting from handling or from contact with the above product. Appearance: white or yellowish crystalline powder. Einecs: 609-369-8. Description:
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2015.12.23 First certified in 1996, Unimin Corporation’s Nepheline Syenite Operations (NSO) encompasses 3,500 acres in Ontario, Canada, 250 of which are actively managed for wildlife. NSO consists of two plants, the Blue Mountain Plant and the Nephton Plant. Presently, the site includes both active and inactive quarries, two processing
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nepheline syenite intrusions (Fig. 1C). They are generally 50 cm to 2 m in width and ∼100 m to ∼500 m in length. The nephelinite lava overlies on the top of the mafic-ultramafic intrusions and
Read More2017.4.20 Global new and cumulative wind turbine capacity installation, ... nepheline syenite complexes are currently being. ... dust, noise, heavy traffic and.
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Nepheline syenite. Nepheline syenite is a pale-colored, coarse-grained rock composed essentially of alkali feldspar (ca. 70%) and nepheline (ca. 20%) with minor proportions of dark minerals such as sodic pyroxene, sodic hornblende, or biotite; its volcanic equivalent is phonolite. It was first described from Foya (hence the original name ...
Read MoreVegetation surveys were conducted in 2014 and 2015 to determine the role of the moss Gemmabryum caespiticium in promoting the growth of vascular vegetation as protective cover on nepheline syenite ...
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2010.10.21 Syenite and nepheline syenite pegmatites are relatively common in the Larvik Plutonic Complex (Dahlgren, 2010), and can be grouped in three main suites. Miaskitic pegmatites with zircon, titanite, pyrochlore and zirconolite (‘polymignite’), known as the eastern type, as they are mainly found in the eastern part of the complex.
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