Sulfide minerals are the source of various precious metals, most notably gold, silver, and platinum. They also are the ore minerals of most metals used by industry, as for example antimony, bismuth, copper, lead, nickel, and zinc.
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The sulfide minerals are a class of minerals containing sulfide (S ) or disulfide (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 inorganic compounds.
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Sulfide minerals are structurally simple. They not only exhibit high symmetry in their crystal forms but also have many metallic characteristics, such as electric conductivity and metallic luster. Sulfide minerals have low hardness and higher specific gravity. Generally, sulfides are opaque, sectile, and have high density.
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Apr 23, 2009 The sulfide minerals represent higher temperatures and a slightly deeper setting than the sulfate minerals, which reflect the oxygen-rich environment near the Earth's surface. Sulfides occur as primary accessory minerals in many different igneous rocks and in deep hydrothermal deposits that are closely related to igneous intrusions.
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Arsenopyrite (FeAsS), orpiment (As 2 S 3 ), and realgar (AsS/As 4 S 4) 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.
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Sep 27, 2016 The sulphide minerals are compounds of the metals with sulphur. Nearly all these minerals have a metallic luster, i.e., the peculiar shining appearance of metals, such as gold, silver, copper, lead, tin, iron, etc. They are all heavy minerals and nearly all are of economic importance. Iron Pyrites or Pyrite FeS2.
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Sulfides Group of minerals that are compound s of one or more metallic element s combined with the non-metallic element sulfur. The sulfur acts as a semi-metal when it combines to form a sulfide mineral. In some sulfides, the semi-metals arsenic, antimony, selenium, and tellurium substitute for the sulfur.
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The sulfide minerals such as troilite, pyrite, and pentlandite were found in the sample of Dronino meteorite. The chemical composition of troilite from Dronino appeared to be non-stoichiometric ...
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A molybdenum sulfide, molybdenite is the most important source of molybdenum, which is an important element in high-strength steels. Molybdenite was originally thought to be lead, and its name is derived from the Greek word for lead, molybdos. It was recognized as a distinct mineral by the Swedish chemist Carl Scheele in 1778.
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Sulfides. Group of minerals that are compound s of one or more metallic element s combined with the non-metallic element sulfur. The sulfur acts as a semi-metal when it combines to form a sulfide mineral. In some sulfides, the semi-metals arsenic, antimony, selenium, and tellurium substitute for the sulfur. There are several sub-classifications ...
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Apr 01, 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, whether formed abiotically or biogenically.
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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.
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Sulfide minerals are solid chemical compounds which contain negatively charged sulfur ions. These ions include the sulfide ion where sulfur is in the -2
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Mar 28, 2015 The sulfide minerals represent higher temperatures and a slightly deeper setting than the sulfate minerals, which reflect the oxygen- rich environment near the Earth's surface. 4. Sulfides occur as primary accessory minerals in many different igneous rocks and in deep hydrothermal deposits that are closely related to igneous intrusions.
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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, whether formed abiotically or biogenically.
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Secondary sulfide mineral in sedimentary rocks. Pyrrhotite (Fe1-xS) Occurrence: Accessory in mafic igneous rocks High T Hydrothermal May contain minor Cu, Ni, Pt. Arsenopyrite FeAsS Crystal System Monoclinic Point Group 2/m Space Group P21 Optical opaque Color gray Luster Metallic Hardness 5.5-6
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Sensitivity To Sulfur and Sulfide Minerals. Although sulfur is an element that exists in the human body and is essential for health, some people are sensitive to it. If you are sensitive to sulfur, you may also be sensitive to thiols, sulfide minerals, and sulfites.
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The Sulfates are an important mineral class and include some very interesting and attractive specimens. Although many minerals belong to this class, only barite, gypsum, and anhydrite can be considered common. The basic chemical unit is the (AO4) complex anion with a charge of negative two (-2).The sulfites, selenites and tellurites (notice the spelling) have a basic unit of
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Realgar is a monoclinic arsenic sulfide mineral with a brilliant red color and a chemical composition of As 4 S 4. Well-formed realgar crystals can look so much like red gemstones that the mineral was often called "ruby sulfur" and "ruby arsenic." However, realgar is not used as a gemstone because it is very soft, with a Mohs hardness of just 1 ...
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Nov 09, 2020 This particular ore occurs in most sulfide mineral deposits, with some chalcopyrite existing in veins; some of these ores contain significant amounts of zinc instead of iron ore. Chalcopyrite is ...
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Sulfides. Sulfides are formed when metallic elements combine with sulfur. Unlike sulfates, sulfides do not contain oxygen. Pyrite, or iron sulfide, is a common sulfide mineral known as fool’s gold. People may mistake pyrite for gold because the two minerals are shiny, metallic, and yellow in color. Lesson Summary
Read MoreThe 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.
Read MoreSulfide minerals are solid chemical compounds which contain negatively charged sulfur ions. These ions include the sulfide ion where sulfur is in the -2
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Sulfide Mineral. any of various minerals comprising a class and consisting of sulfur compounds of metals. Sulfide minerals comprise (by weight) about 0.15 percent of the earth’s crust; more than 200 sulfide mineral varieties are known. The natural selenides, tellurides, and arsenides, as well as the antimonides and bismuth minerals, are close ...
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The importance of sulfide minerals in ores has long been, and continues to be, a major reason for the interest of mineralogists and geochemists in these materials. Determining the fundamental chemistry of sulfides is key to understanding their conditions of formation and, hence, the geological processes by which certain ore deposits have formed.
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Sulfides Mineral Gallery. including Sulfosalts, Selenides, Tellurides, Arsenides, Antimonides, and Bismuthinides. Pyrite, Bornite, Chalcopyrite, Arsenopyrite, Galena, Sphalerite, Millerite and others. minerals in alphabetical order by first letter only. click on the title link or photo to proceed to a specimen's page
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Sulfide minerals such as pyrite form under reducing conditions in the presence of organic matter. Jarosite and natrojarosite, Fe-bearing sulfate minerals, are good indicator minerals. Visual observation of morphology and crystal habit is often sufficient to identify many of the carbonate, sulfate, and halide minerals.
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Sulfosalt minerals are those complex sulfide minerals with the general formula: A m B n S p; where A represents a metal such as copper, lead, silver, iron, and rarely mercury, zinc, vanadium; B usually represents semi-metal such as arsenic, antimony, bismuth, and rarely germanium, or metals like tin and rarely vanadium; and S is sulfur or rarely selenium or/and tellurium.
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Many metal sulfides are not hydrolyzed in supercritical water and can therefore be used for chemical reactions in hydrothermal fluids [15]. Early work is based on geochemical sulfide-based minerals, such as bornite (Cu 5 FeS 5), chalcopyrite (CuFeS 2), and tetrahedrite (Cu 12 Sb 4
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Sphalerite is a common mineral, and occurs in many distinct colors and forms. Iron impurities are often present in this mineral, and for this reason it is not commonly transparent. If Sphalerite contains a large amount of iron impurities, it will have a metallic dark gray or black color, which is typical of most sulfide minerals. Sphalerite is one of the few minerals that can range from
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Minerals are classified according to their chemical properties. Except for the native element class, the chemical basis for classifying minerals is the anion, the negatively charged ion that usually shows up at the end of the chemical formula of the mineral. For example, the sulfides are based on the sufur ion, S 2–.
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The first mineral group with no oxygen gives us pyrite, marcasite, galena, sphalerite, cinnabar, and arsenopyrite.
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Aug 15, 2017 The main difference in the heat of adsorption of the collectors on a sulphide mineral for a given alkyl group is probably due to the differences in the electronegativity of the O, C, P and N atoms in the polar head group (Somasundaran and Nagaraj, 1984, McMurry, 1996, Lotter and Bradshaw, 2010). The DTP is less reactive than the diethyl-DTC ...
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Approaches designed to isolate sulfide sulfur followed by the deter mination of the sulfate sulfur were tried and found wanting. For example, attack with tin and hydrochloric acid (Treadwell and Hall, 1919, p. 368-372) failed to dissolve insoluble sulfides in minerals such as chalcocite, bornite, and chalcopyrite. Tin and hydrobromic acid
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Dec 16, 2021 Drilling will intensify in 2022, with follow-up programs planned at Wilsons North, Snook, Sulphide City and untested targets surrounding Sulphide City. More massive copper-zinc sulphides have been hit at both the Wilsons North and Snook prospects within Zenith Minerals’ Develin Creek copper-zinc project in Queensland.
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