Characterization of porosity in sulfide ore minerals: A USANS/SANS study

The placer deposit at Barrytown, New Zealand, has been worked for gold and is known for high levels of ilmenite that has not been exploited. Other heavy minerals are present but have not been well characterized, which is the purpose of this research. Sand grains were separated into the density fractions and the heavier fractions analyzed by laser ablation ICP-MS for elemental composition and by scanning electron microscopy (SEM) EDS in whole grains and polished sections. Grain size distributions were determined from SEM images of polished grain mounts. Elemental associations have been identified with different minerals. A wide range of ore minerals, or potential useful industrial minerals, have been shown to be present largely as individual sand grains. These include gold, ilmenite, garnet, zircon, monazite, allanite, uraninite, thorite, cassiterite, wolframite, scheelite, and columbite. The ilmenite contains many inclusions, consisting of silicates and phosphates and 100–400 ppm Nb. Scandium is found to be present in zircon at 100–600 ppm along with 3000 ppm Y. Monazite is depleted in Eu relative to chondrite and contains Ga and Ge at 1000–3000 ppm. Because the sand grains are mostly individual minerals, it is suggested that separation may be possible using a combination of density, electrostatic and magnetic methods to obtain almost pure mineral fractions. This knowledge should inform decisions on potential exploitation of the resource.

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Mineralogy and textural relationships of ores from the Whalesback Mine, northeastern Newfoundland

Canadian Journal of Earth Sciences ◽

10.1139/e68-137 ◽

1968 ◽

Vol 5 (6) ◽

pp. 1387-1395 ◽

Cited By ~ 4

Author(s):

K. Kanehira ◽

D. Bachinski

Keyword(s):

Shear Zone ◽

Volcanic Rocks ◽

Sulfide Deposit ◽

Ore Formation ◽

Pillow Lavas ◽

Bay Area ◽

Internal Reaction ◽

Sulfide Ore ◽

Ore Minerals ◽

Pressure Shadow

The Whalesback Mine is one of many copper deposits associated with Ordovician volcanic rocks in the Notre Dame Bay area, Newfoundland. The deposit consists of veins, pods, and disseminated sulfides localized within a highly chloritized shear zone cutting basaltic pillow lavas. Porphyritic dikes cut the shear zone, sulfide deposit, and the surrounding pillow lavas; all of the rocks, including the sulfide-rich rocks, have been regionally metamorphosed. Ore minerals, in decreasing order of abundance, include pyrite, chalcopyrite, pyrrhotite, sphalerite, mackinawite, pentlandite, magnetite, cubanite, galena, and ilmenite. Marcasite, covellite, and goethite are supergene minerals. Chlorite and quartz are the predominant gangue minerals. Muscovite, carbonates, sphene, albite, and epidote are minor constituents. Banding and streaking of sulfides in massive ores, crushed pyrite, and the local occurrence of pressure-shadow phenomena in the ore are indicative of shearing stress post-dating original sulfide ore formation. Present sulfide assemblages are compatible with relatively low temperatures and are the result of re-equilibration and internal reaction among the sulfides with decreasing temperature.

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Mineralogical characterization of a polymetallic sulfide ore to improve silver recovery

Journal of Wuhan University of Technology-Mater Sci Ed ◽

10.1007/s11595-017-1625-7 ◽

2017 ◽

Vol 32 (3) ◽

pp. 501-507

Author(s):

Daixiong Chen ◽

Jun Xiao

Keyword(s):

Silver Recovery ◽

Mineralogical Characterization ◽

Sulfide Ore

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CHARACTERIZATION OF PRODUCTS AND ANALYSIS OF SULFUR VAPORIZATION FROM AN IRON SULFIDE ORE

Mineral Processing and Extractive Metallurgy Review ◽

10.1080/08827500490441369 ◽

2004 ◽

Vol 25 (4) ◽

pp. 287-312

Author(s):

N. ABDENOURI ◽

A. BELGHIT ◽

R. BERJOAN ◽

G. PERAUDEAU ◽

G. FLAMANT

Keyword(s):

Iron Sulfide ◽

Sulfide Ore

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Mineralogical and Geochemical Characterization of Gold Bearing Quartz Veins and Soils in Parts of Maru Schist Belt Area, Northwestern Nigeria

Journal of Geological Research ◽

10.1155/2014/314214 ◽

2014 ◽

Vol 2014 ◽

pp. 1-17 ◽

Cited By ~ 3

Author(s):

Samson Adeleke Oke ◽

Akinlolu Festus Abimbola ◽

Dieter Rammlmair

Keyword(s):

Gold Content ◽

X Ray Diffraction ◽

Geochemical Characterization ◽

X Ray ◽

Quartz Veins ◽

Magmatic Fluids ◽

Geochemical Association ◽

Ore Minerals ◽

Gold Bearing

Epigenetic, N-S, NNE-SSW quartz veins crosscut metapelites and metagabbro in Maru area. The objectives of this work were to study field, mineralogy, and geochemical characteristics of gold bearing quartz veins and soils. Euhedral and polygonal magnetite with hematite constituted the major ore minerals. Quartz occurred as main gangue phase with appreciable sericite and chlorite. The mineralogy of soil retrieved from twelve minor gold fields examined with X-ray diffraction is quartz ± albite ± microcline ± muscovite ± hornblende ± magnetite ± illite ± kaolinite ± halloysite ± smectite ± goethite ± vermiculite ± chlorite. The concentration of gold in quartz vein varies from 10.0 to 6280.0 ppb with appreciable Pb (3.5–157.0 ppm) and ΣREE (3.6 to 82.9 ppm). Gold content in soil varies from <5.0 to 5700.0 ppb. The soil is characterized by As ± Sb gold’s pathfinder geochemical association. Multidata set analysis revealed most favourable areas for gold. Possibility of magmatic fluids as part of ore constituents is feasible due to presence of several intrusions close to quartz veins. Based on field, mineralogical, and geochemical evidences, ore fluids may have been derived from fracturing, metamorphic dewatering, crustal devolatilization of sedimentary, gabbroic protoliths, and emplaced in an orogenic setting.

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The Buenaventura Sector of the San Finx W–Sn Deposit (NW Spain): Ore Mineralogy, Host Rocks and Associated Hydrothermal Alteration

Environmental Sciences Proceedings ◽

10.3390/iecms2021-09358 ◽

2021 ◽

Vol 6 (1) ◽

pp. 11

Author(s):

David Garófano-Medina ◽

Mercedes Fuertes-Fuente ◽

Antonia Cepedal ◽

Agustín Martin-Izard

Keyword(s):

Hydrothermal Alteration ◽

Nw Spain ◽

Ore Deposit ◽

Main Host ◽

Ore Minerals ◽

Ore Mineralogy ◽

Native Bismuth ◽

Host Rocks ◽

Spanish Province

The San Finx W–Sn ore deposit is located in the Spanish province of A Coruña (Galicia, NW Spain). Geologically, it occurs in the Galicia-Trás-os-Montes zone which is one of the innermost zones of the Iberian Variscan collisional belt. This ore deposit is characterized by NE–SW trending quartz-dominated veins with centimeter-size hübnerite and cassiterite. This research focuses on one sector of this deposit known as Buenaventura. The aim of this work is to present a mineralogical and petrological characterization of the ore-bearing veins, their host rocks and associated hydrothermal alteration. The vein mineralogy is mainly quartz, muscovite, K-feldspar, apatite and scarce fluorite. The ore minerals are hübnerite, scheelite and cassiterite with columbite and ilmenorutile-struverite inclusions, together with sulfides, mainly chalcopyrite and arsenopyrite, and, in less abundance, molybdenite, löllingite, pyrrhotite, sphalerite, stannite, pyrite, Bi-Pb-Ag sulfosalts and native bismuth. The main host-rocks are micaschist and paragneiss and two types of pegmatites, homogeneous pegmatites and banded aplite-pegmatites with columbite. The host rocks are affected by four types of hydrothermal alterations: tourmalinization, greissenization, feldspathization and silicification. The more widespread alteration is the feldspathization in which the protolith is replaced by massive albite and K-feldspar with fibrous habit, accompanied by apatite, chlorite, rutile, magnetite, hematite, chalcopyrite and sphalerite. In addition, there are highly deformed areas with a complex alteration rich in K-feldspar and sulfides, mainly chalcopyrite, minerals of the stannite group and sphalerite and, in less abundance, bismuthinite, native bismuth, galena and pyrite. This deposit shares features in terms of geological setting, hydrothermal alteration and ore assemblages with exogreisen systems formed in the cupolas of highly fractionated granites in collisional settings.

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Copper Recovery Through Smelter Slag Flotation in Atacama, Chile: An Industrial Case Study

Ingeniería e Investigación ◽

10.15446/ing.investig.v41n1.84162 ◽

2021 ◽

Vol 41 (1) ◽

pp. e84162

Author(s):

Osvaldo Pavez ◽

Pablo Herrera ◽

Miguel González ◽

Oscar Rivera

Keyword(s):

Copper Slag ◽

Copper Smelter ◽

Copper Recovery ◽

Processing Capacity ◽

Industrial Case Study ◽

Mineralogical Characterization ◽

Physical Chemical ◽

Sulfide Ore

Copper slag flotation was studied on an industrial scale at a concentrator plant in the region of Atacama, Chile. This study consisted of the physical, chemical, and mineralogical characterization of the copper slag, along with preliminary flotation tests. This article focuses on industrial flotation, which consisted of two oneyear campaigns (2016 and 2017). The first campaign was carried out using an existing copper slag flotation circuit in the plant. During the second campaign (2017), a circuit for sulfide ore flotation with an additional columnar flotation cleaning stage was evaluated. Results showed an improvement in metallurgical parameters on the second campaign (including improvements in processing capacity, concentrate copper grade, and metallurgical recovery). From the industrial copper slag flotation campaigns, it was concluded that it is possible to obtain a commercialquality copper concentrate, suitable for further processing in a copper smelter. This mitigates certain environmental impacts of copper processing.

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Adsorption of O-isopropyl-N-ethyl thionocarbamate on Cu sulfide ore minerals

Minerals Engineering ◽

10.1016/j.mineng.2014.08.002 ◽

2014 ◽

Vol 69 ◽

pp. 120-132 ◽

Cited By ~ 17

Author(s):

Alan N. Buckley ◽

Gregory A. Hope ◽

Kenneth C. Lee ◽

Eddie A. Petrovic ◽

Ronald Woods

Keyword(s):

Sulfide Ore ◽

Ore Minerals

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