which of the following is/are sulfide ores?(a) bauxite (b) chalcopyrite (c) hematite(d) magnetite (e) galena
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Chalcopyrite Chalcopyrite Group. Chalcopyrite-Eskebornite Series. A major ore of copper. Common in sulfide veins and disseminated in igneous rocks. Weathering may lead to the formation of malachite, azurite, brochantite, langite and numerous other secondary copper minerals. Visit gemdat.org for gemological information about Chalcopyrite.
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Gold and Gossan Back to gossan. Pyrite is just iron sulfide. When it weathers, it produces a chemical reaction that releases heat yielding sulfuric acid (H2SO4), rotten egg gas (Fe2S) and rust (Fe203, Fe0H). If you have ever been close to any politician, you have a good idea of what hydrogen-sulfide (rotten egg gas) smells like.old in the San Juan Mountains of Colorado. As a gold prospector you should immediately notice the mine dumps, lack of trees growing on the yellow, brown, reddish brown and tawny colored rock and soil known as gossan.
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Minerals from Different Locations It is the most common of the sulfide minerals and is usually found with other sulfides or oxides in Quartz veins, sedimentary or metamorphic rocks. Pyrite $26.00 M405c This is a beautiful specimen with bright yellow Sulfur crystals.
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Hematite Guide Hematite is one of several iron oxides with a rust-red streak. It is actually harder than iron, but it is very brittle. Some hematite contains titanium inclusions. It tends to be found in areas with mineral hot springs as it precipitates out of water. It can also occur in standing still water.
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What is the chemical name of FeS2 and how it is formed ? The mineral pyrite, or iron pyrite, is an iron sulfide with the formula FeS2. This mineral's metallic luster and pale-to-normal, brass-yellow hue have earned it the nickname fool's gold due to its resemblance to gold. Pyrite is the most common of the sulfide minerals.
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Bauxite Bauxite does not have a specific composition. It is a mixture of hydrous aluminum oxides, aluminum hydroxides, clay minerals and insoluble materials such as quartz, hematite, magnetite, siderite and goethite. The aluminum minerals in bauxite can include: gibbsite Al(OH) 3, boehmite AlO(OH), and, diaspore, AlO(OH).Bauxite is typically a soft (H:1-3), white to gray to reddish brown material with a pisolitic structure, earthy luster and a low specific gravity (SG: 2.0-2.5).n the Bayer Process the bauxite is washed in a hot solution of sodium hydroxide which leaches aluminum from the bauxite. The aluminum is precipitated out of solution in the form of aluminum hydroxide, Al(OH) 3. The aluminum hydroxide is then calcined to form alumina, Al 2 O 3.
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Bauxite Bauxitic or lateritic soil is scientifically known as oxisol 2. Sometimes “bauxite” has been used as a mineralogical term. In this case it refers to mixed aluminum hydroxide minerals of uncertain identity, analogous to the terms “limonite” and “wad” for iron and manganese hydroxides, respectively 3.
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Chalcocite Chalcocite, copper(I) sulfide (Cu 2 S), is an important copper ore mineral. It is opaque and dark-gray to black with a metallic luster. It has a hardness of 2½ - 3 on the Mohs scale. It is a sulfide with an orthorhombic crystal system. The term chalcocite comes from the alteration of the obsolete name chalcosine, from the Greek khalkos, meaning copper. It is also known as redruthite, vitreous copper and copper-glance.
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Peridotite Some of the occurrences of peridotite on Earth's surface are thought to be rocks from the mantle that have been brought up from depth by deep-source magmas. Ophiolites and pipes are two structures that have brought mantle peridotite to the surface. Peridotite is also found in the igneous rocks of sills and dikes.
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What is Williamson's ether synthesis? site search. The Williamson ether synthesis is a reaction that converts alcohols (R-OH) into ethers (R-O-R). The first step in this reaction is forming the conjugate base of the alcohol (called an alcoxide) by reacting the alcohol with sodium metal.
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- Archaeology Wordsmith. bog iron. SYNONYMS OR RELATED TERMS: lake ore, limnite, marsh ore, meadow ore, morass ore, swamp ore, bog iron ore. CATEGORY: geology. DEFINITION: A workable, porous type of brown hematite (impure hydrous oxides) found in bogs (and also in marshes, swamps, peat mosses, and shallow lake beds).
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- Aluminium ore is called bauxite. The bauxite is purified to yield a white powder, aluminium oxide, from which aluminium can be extracted. The extraction is done by electrolysis. But first the aluminium oxide must be made molten so that electricity can pass through it.
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pyrite The mineral pyrite, or iron pyrite, also known as fool's gold, is an iron sulfide with the chemical formula FeS2. This mineral's metallic luster and pale brass-yellow hue give it a superficial resemblance to gold, hence the well-known nickname of fool's gold.
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Translations for iron ore The iron itself is usually found in the form of magnetite, hematite, goethite, limonite or siderite. Ores carrying very high quantities of hematite or magnetite are known as natural ore or direct shipping ore, meaning they can be fed directly into iron-making blast furnaces.
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- To add further clarification: 1  An applet must be a subclass of the java.applet.Applet class. 2  The Applet class provides the standard interface between the applet and the browser environment. [ 3 1].
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Bauxite Bauxite. Bauxite is an ore that was first discovered in 1822; various other types of bauxite have since been found and they all contain about 50 % alumina. They are virtually the only type of ore used to extract aluminium. Bauxites are aluminium-rich products derived from the weathering of lime and silicate gangue. They are found in those regions where in earlier geological periods the climate was characterised by high temperatures and strong rainfall.
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Pyrite In calcite and quartz veins, pyrite is commonly associated with chalcopyrite and other sulfide minerals and metallic ores. Pyrite oxidizes to other iron sulfate minerals that in turn alter to limonite, so the presence of a weathered ‘rusty’ limonite layer may indicate the presence of pyrite in the underlying rock. ^ Top
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- - McGoldrick, PJ and Large, RR (1992): Geologic and geochemical controls on gold-rich stringer mineralization in the Que River Deposit, Tasmania.Economic Geology, 87, 667-685.t is mostly fine grained but chalcopyrite, galena, red-brown sphalerite, pyrite and quartz all occur in lustrous crystals to over a centimetre in vughs in both the Que River and Hellyer Mines (the latter producing attractive large galena crystals to about a centimetre in vughs.
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- Also a deposit in China is associated with coal. Gold-The primary mineral of gold is the native metal and electrum (a gold-silver alloy). Some tellurides are also important ore minerals such as calaverite, sylvanite, and petzite.Hafnium-Primary ore mineral is zircon. Indium-Primarily is a byproduct of zinc processing.he main ore minerals in bauxite are gibbsite, bohmeite, and diaspore. Antimony-The primary ore of antimony is it's sulfide, stibnite. Arsenic-Recovered from other metal processing streams (primarily from the sulfosalts such as tennantite etc.). Arsenopyrite is the most common arsenic mineral.
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Chalcopyrite Chalcopyrite is most often found with pyrite and other sulfide minerals, as well as sphalerite, galena, dolomite, tourmaline or quartz. It can oxidize to form a number of minerals such as malachite, azurite, and cuprite.
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- The mineral pyrite, or iron pyrite, also known as fool's gold, is an iron sulfide with the chemical formula FeS2. Pyrite is considered the most common of the sulfide minerals. Pyrite's metallic luster and pale brass-yellow hue give it a superficial resemblance to gold, hence the well-known nickname of fool's gold. The color has also led to the nicknames brass, brazzle, and Brazil, primarily used to refer to pyrite found in coal.
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- But the state Government has identified 13 minerals such as iron ore, bauxite, chromite, coal, limestone, dolomite, fireclay, china clay, nickel ore, mineral sand, manganese, graphite, quartz/quartzite/silica, as major minerals.
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- Aluminium is the most abundant metal in the earth’s crust. The aluminium-containing bauxite ores gibbsite, böhmite and diaspore are the basic raw material for primary aluminium production. Proven, economically viable reserves of bauxite are sufficient to supply at least another 100 years at current demand.
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- Pyrite is classified as a sulfide. Sulfides contain a metal cation, Fe in pyrite's case, and a sulfur anion. A majority of economically important ore minerals are sulfides. Copper, cobalt, silver and lead are other examples of sulfides.
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- Magnetite is a ferromagnetic mineral that is in the iron oxide family. It is formed of one part wustite and one part hematite. Wustite is itself an iron oxide mineral that is found in meteorites as well as in native iron. Hematite is also a form of iron oxide and is commonly mined as the principal ore of man-made iron.
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Iron ore Iron-ore mining methods vary by the type of ore being mined. There are four main types of iron-ore deposits worked currently, depending on the mineralogy and geology of the ore deposits. These are magnetite, titanomagnetite, massive hematite and pisolitic ironstone deposits. Banded iron formations