Sulfide minerals - Wikipedia

The sulfide minerals are a class of minerals containing sulfide (S2−) as the major anion. Some sulfide minerals are economically important as metal ores. The sulfide class also includes the selenides, the tellurides, the arsenides, the antimonides, the bismuthinides, the sulfarsenides and the sulfosalts. Sulfide minerals are...

Sulfide mineral | Britannica.com

The most common sulfide crystalling in this manner is galena (PbS), the ore mineral of lead. A type of packing that involves two sulfide ions in each of the octahedral positions in the sodium chloride structure is the pyrite structure. This is a high-symmetry structure characteristic of the iron sulfide, pyrite (FeS2O). The second...

Sulfide ore: Sulfide ore mineral information and data. - Mindat.org

An ore composed of mixed or undifferentiated sulfide minerals.

Mineralogy of Sulfides - Elements - Elements Magazine

Apr 1, 2017 ... Metal sulfides are the most important group of ore minerals. Here, we review what is known about their compositions, crystal structures, phase relations and parageneses. Much less is known about their surface chemistry, their biogeochemistry, or the formation and behaviour of 'nanoparticle' sulfides,...

The Mineral Gallery - Sulfides Class - Amethyst Galleries

The Sulfide Class minerals comprise an economically important class of minerals. Most major ores of important metals such as copper, lead and silver are sulfides. Strong generalities exist in this class. The majority of sulfides are metallic, opaque, generally sectile, soft to average in hardness and they have high densities,...

List Sulphide Minerals - 911 Metallurgist

... tarnished with a variety of colors, often very brilliant; powder, grayish black; luster, metallic; H = 3; G = 4.9 to 5.4; composition, copper, iron and sulphur in variable proportions, with copper from 44% to 71%; cleavage, almost absent. Bornite is found mostly with other copper ores.

Sulfide Minerals - ThoughtCo

Jul 1, 2017 ... The sulfide mineral specimens you see in rock shops come from the deep levels of mines, and most display a metallic luster. Bornite (Cu5FeS4)is one of the lesser copper ore minerals, but its color makes it highly collectible. (more below). Bornite stands out for the amazing metallic blue-green color it turns...

Sulfides | Mineralogy4Kids

The minerals that make up the sulfide class are composed of metal cations (+2 charge) combined with sulfur. The sulfides form an important group of minerals which includes the majority of the ore minerals for iron, copper, nickel, lead, cobalt, zinc, and silver. Most of the minerals in this class allow light to transmit through...

Sulfides

Classification of the Minerals. • Non-Silicates. – Native Elements. – Halides. – Sulfides. – Oxides. – Hydroxides. – Carbonates. – Sulfates. – Phosphates. • Silicates. – Orthosilicates ... Fe Sulfides. • Fe: – Pyrite FeS2. – Marcasite FeS2. – Pyrrhotite Fe1-xS. – Troilite FeS. – Arsenopyrite FeAsS ... Uses: Major ore of Cu...

Sulfide minerals - an overview | ScienceDirect Topics

Arsenopyrite (FeAsS), orpiment (As2S3), and realgar (AsS/As4S4) are the most common arsenic sulfide minerals, occurring primarily in hydrothermal and magmatic ore deposits. Arsenic is commonly found in sulfide-bearing mineral deposits; especially with gold mineralization. Orpiment, due to its golden color, was used in...

Microbial leaching of metals from sulfide minerals. - NCBI

Biotechnol Adv. 2001 Apr 1;19(2):119-32. Microbial leaching of metals from sulfide minerals. Suzuki I(1). Author information: (1)Department of Microbiology, University of Manitoba, Winnipeg, MB, Canada. [email protected] Microorganisms are important in metal recovery from ores, particularly sulfide ores. Copper...

Ore genesis dating: implication of Sm-Nd method using sulfide ...

Title: Ore genesis dating: implication of Sm-Nd method using sulfide minerals for mafic-ultramafic layered intrusions of Fennoscandian Shield. Authors: Serov, Pavel; Bayanova, Tamara; Steshenko, Ekaterina; Ekimova, Nadezhda. Affiliation: AA(Geological Institute of the Kola Science Center RAS, Laboratory of...

7. Geophysical Characteristics of Volcanogenic Massive Sulfide ...

Velocity values of various rock types and ore minerals plotted against their density with lines of constant acoustic impedance overlain within field.........................127. 7–7. Seismic reflection profiles through volcanogenic massive sulfide deposits..................128. Tables. 7–1. Utility of geophysical techniques in exploration of...

Sulphide Gold | Gekko

When gold is associated with sulphides, it can be either fully encapsulated by the sulphide particle or partially liberated, i.e. exposed on the edge of the sulphide mineral. Sulphide complex gold can occur in a wide range of particle sizes. Because cyanide cannot always leach sulphide-associated gold, regrinding the ore is...

Mineralogy, Textures, and Relative Age Relationships of Massive ...

mineralogy and textures of the ore in most of the ma- jor massive sulfide deposits in the district and incor- porates these observations into a paragenetic se- quence summarizing the relative age relationships of the sulfide and nonsulfide minerals. These features of the West Shasta ore are compared with those of Ku-.

Recycling Process Water in Complex Sulfide Ore Flotation: Effect of ...

The influence of major components of calcium and sulfate ions in process water on xanthate collector adsorption and flotation response of pure chalcopyrite, galena, and sphalerite minerals was investigated by Hallimond tube flotation, zeta-potential, FTIR, and XPS spectroscopy studies, while bench scale flotation tests...

bacterial leaching of sulfide ores - Geologian tutkimuskeskus

Bacterial leaching o f sulfice ores: Mineral altemiiun, dissolution, and Intemctions. Geolog ical Suwey of Finland, NucIear Waste Disposal Research , Report. YST-83, 24 pages and 10 appendices. ISBN 951 -693524-2. ISSN 0783-3555. The purpose nf this work was to evaluate the bacterial oxidation of sulfide ore materiais...

The iron sulphide minerals: their chemistry and role in nature - jstor

The iron sulphide minerals: their chemistry and role in nature. D. J. Vaughan and A. R. Lennie. Metal sulphides are a major group of ore minerals , and the iron sulphides are the most widely occurring of the sulphide minerals y found not only in sulphide ore deposits but also as accessory minerals in many common rocks.

Ore Minerals 2 - Sulfides and Oxides - EduMine Online Course

May 18, 2017 ... Ore Minerals 2 - Sulfides and Oxides. Areas of Study: Exploration and Geology. Qualifies for Certification. This course describes sixteen common sulfide and oxide minerals, their physical properties, uses and importance.

Recovery of Cu and Zn from Complex Sulphide Ore - IOPscience

recovery of minerals. 1. Introduction. The processing of complex Sulphide ores depends on the nature of the gangue material and percentage composition of various nonferrous metals present in the ores or in the bulk concentrates. As Zinc and copper often occur together, the separation of one metal from the other has...

THE ELECTRICAL RESISTIVITY OF SOME SULPHIDE AND OXIDE ...

The electrical resistivity of 60 pyrite, 31 chalcopyrite, 42 pyrrhotite, 8 arsenopyrite and löllingite, 6 cobaltite, 15 galena, 13 zincblende, 26 haematite, 46 magnetite, 16 various manganese minerals, 23 complex ores and 7 graphitic shale samples (mostly from Swedish localities) was measured by the four point method.

Cinnabar: A toxic ore of mercury, once used as a pigment

Cinnabar is a toxic mercury sulfide mineral with a chemical composition of HgS. It is the only important ore of mercury. It has a bright red color that has caused people to use it as a pigment and carve it into jewelry and ornaments for thousands of years in many parts of the world. Because it is toxic, its pigment and jewelry...

Ore Minerals 5 - Gallery of Mineral Specimens For Sale

Jan 31, 2017 ... Acanthite is one of the most important epithermal minerals of silver. Acanthite was a major ore component at the Comstock Lode in Nevada, also in Creede, Colorado and Fresnillo, Mexico. The Greens Creek mine is one the largest producing primary silver mines in the world. The massive sulfide deposit...

Sulfides, Selenides and Tellurides: rebellious and refractory gold ores

Interested in solving the difficulties of dealing with rebellious ores and recover their gold and silver? Many types of valuable ores contain Sulfides, selenides or tellurides and they can make processing these ores more difficult. Recognizing these minerals can help us understand and find gold deposits in the field. There are...

Lecture 14 Native Elements and Sulfides mod 10.ppt

Copper – Sulfide-poor hydrothermal ore deposits or secondary oxidation of Cu-sulfide minerals; most abundant occurrence is the native copper deposits of the Keweenawan Peninsula of Upper Michigan where it occurs in lava flows and interflow conglomerates. Native Element Occurrences. Platinum – Occurs as primary...

Sulfide Mining - Friends of the Boundary Waters Wilderness

Sulfide mining interest near the BWCAW isn't limited to a single mine proposal. Hundreds of prospecting permits have been filed for minerals near the BWCAW, and thousands of acres of state and federal mineral rights have been leased. Applications for state and federal permits have already been filed for the PolyMet mine...

Minerals | Free Full-Text | Integrated 3D Geological Modeling to ...

Dec 25, 2017 ... 3D geological modeling of lithogeochemical and geological data provides insight into the role of the sulfide ore horizon and associated footwall hydrothermal alteration in localizing shear strain in the Flin Flon volcanogenic massive sulfide deposits, Canada, as deformation evolved from brittle-ductile to...

Geological ore deposits - Australian Museum

Sep 25, 2015 ... Most primary ore minerals (particularly the sulfide minerals) are only stable in anaerobic dry environments. With the rise and fall of the water-table and downward percolating rainwater (containing dissolved oxygen), these minerals dissolve and new minerals (oxide zone minerals) are precipitated in the...

Sources of Copper Ore | Copper Development Association of South ...

This enriches the sulfides, making a secondary enrichment, or transitional zone. The primary mineralization was caused by the superheated geothermal solutions. The secondary enrichment replaces iron in the minerals with more copper, further enriching the ore. The most common copper minerals in the secondary...

Sulphide, Mineral Bearing Sulphides - Mining Glossary | APT Mining

Mineral bearing sulphides are a type of ore with oxygen-free compounds of Sulphur. Found in sulphide-bearing rock in the ore body below the earth's surface.

Science Desk: How Sulfide-Ore Copper Mines Pollute | Save the ...

May 8, 2015 ... When sulfide minerals in ore, tailings or waste rock are exposed to air and water, acid mine drainage develops. Oxidation and hydrolysis reactions turn otherwise benign minerals into toxic materials, including acid, metals (e.g., mercury, copper, nickel, lead and zinc) and sulfates (Jennings et al. 2008).

Thermochemical Data for Sulfosalt Ore Minerals - CiteSeerX

67, 1972, pp. 373-377. Thermochemical Data for Sulfosalt Ore Minerals: Formation from Simple Sulfides. JAMES R. CRAIG AND WILLIAM R. LEEs. Abstract. Free energies of reaction of simple metal sulfides to form sulfosalt phases in the. Ag~Bi-S, Cu-Bi-S, Pb-Bi-S systems at 510øC and the Pb-Sb-S, Sr-Sb-S, and Ag-Sb-S.

NICKEL – Ni - Minerals Council of Australia

minerals most commercial mining is focused on two types of ore deposits laterites and magmatic sulphides. The principal ore minerals of laterite deposits are nickeliferous limonite and garnierite, and the principal ore for magmatic sulfide deposits mineral is pentlanditei. In terms of production, most of the nickel currently...

Challenges in Sulphide Mineral Processing

8 The Open Mineral Processing Journal, 2011, Volume 4. Rao and Chernyshova. There are still persistent problems in sulphide flotation of metal sulphides selectivity against pyrite and among sul- phide minerals, inadvertent activation of silicate gangue by metal ions, hetero-coagulation between sulphide and gangue.

fish and wildlife threatened by sulfide-ore copper mining

Fish & Their Prey Directly at Risk. • Sulfide-ore copper mining is proposed just upstream from the Boundary Waters, where the South Kawishiwi River meets Birch Lake, and some mineral exploration has occurred within a half mile of the Boundary Waters. • Exposing sulfide minerals in ore, waste rock and mine pit walls to air...

Ore and gangue minerals of sulfide chimneys from the North Knoll ...

Ore and gangue minerals of sulfide chimneys from the North Knoll,. Iheya Ridge, Okinawa Trough, Japan. Hirotomo UENO*1. Hiroshi HAMASAKI*1. Yuuka MURAKAWA*1. Satoshi KITAZONO*1 and Tetsuichi TAKEDA*2. The deep-tow surveys in 1995 and three dives of "Shinkai 2000" in 1996 have discovered the...

Mining Flotation reagents for non-sulfide ores - Specialty Additives

Air Products produces an array of performance chemicals that serve the mining industry. At the core of that technical know-how is the production of high-quality reagents for reverse flotation of non-sulfide ores. Our Tomamine® product line of ether amines is designed specifically for this type of mineral flotation. These.

Process optimisation | Metallurgy & Mineral Processing | SRK News

Copper sulfide represents the main source of produced copper. The three main types of copper sulfide deposits are high grade massive and disseminated copper-porphyritic and copper-bearing sandstone. Unlike the copper sulfide deposits presented by massive ores, copper-porphyritic deposits contain only 5-10% of the...

How can metal mining impact the environment? | American ...

Although the character of waste rock varies with the type of ore, many waste rocks contain sulfide minerals associated with metals, such as lead, zinc, copper, silver, or cadmium. An important sulfide mineral common in waste rock is pyrite, iron sulfide. When pyrite is exposed to air and water, it undergoes a chemical reaction...

Copper Mining and Processing: Processing of Copper Ores ...

On the other hand, while copper sulfide ores are less abundant, they contain higher amounts of copper. Although the processing costs are higher, ultimately more copper can be extracted. Since each mine site is unique in its mineral composition, concentration, and quantities, the most economical and profitable processing...

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