what is pyrite?
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What is Pyrite Pyrite or Iron Pyrite (FeS2) is a very common mineral that is present in many sedimentary rocks as framboidal crystals. Subject to certain conditions, pyrite is problematic in confined construction, such as under floor filling and bridge embankments. This is due to a chemical reaction that can cause pyritic backfill to swell.
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What type of mineral is Pyrite??? The mineral pyrite, or iron pyrite, is iron sulfide, FeS2. It has isometric crystals that usually appear as cubes. The cube faces may be striated (parallel lines on crystal surface or cleavage face) as a result of alternation of the cube and pyritohedron faces.he mineral pyrite, or iron pyrite, is iron sulfide, FeS2. It has isometric crystals that usually appear as cubes. The cube faces may be striated (parallel lines on crystal surface or cleavage face) as a result of alternation of the cube and pyritohedron faces.
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- Striated - Parallel lines on crystal surface or cleavage face. Hardness: 6.5 - Pyrite : Luminescence: Non-fluorescent. Luster: Metallic : Magnetism: Magnetic after heating : Streak: greenish black : Optical Properties of Pyrite : RL Color: Creamy white. Reflectivity
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- Pyrite is a very common mineral, found in a wide variety of geological formations from sedimentary deposits to hydrothermal veins and as a constituent of metamorphic rocks. The brassy-yellow metallic colour of pyrite has in many cases lead to people mistaking it for Gold, hence the common nickname 'Fool's gold'.yrite is commonly found to contain minor nickel, and forms a series with Vaesite; Bravoite is a nickeloan variety of pyrite.
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Pyrite Pyrite is a crystal of positive energy, and is extremely helpful for melancholy and thoughts fixed on misfortune and despair. It relieves anxiety and frustration, and as a mirror to the self, reveals the causes behind these emotions and promotes a search for solutions.
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Marcasite In marcasite jewellery, pyrite used as a gemstone is termed marcasite – that is, marcasite jewellery is made from pyrite, not from the mineral marcasite. In the late medieval and early modern eras the word marcasite meant both pyrite and the mineral marcasite (and iron sulfides in general). The narrower, modern scientific definition for marcasite as orthorhombic iron sulfide dates from 1845. The jewellery sense for the word pre-dates this 1845 scientific redefinition.
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Pyrite Pyrite . Introduction to the Meaning and Uses of Pyrite. Pyrite is often called “Fool’s Gold,” though there is nothing foolish about this mineral. Within its gleaming beauty is a stone of hidden fire, one that can be sparked to life by striking it against metal or stone.
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What is the chemical name of FeS2 and how it is formed ? Report Abuse. 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.
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- Pyrite is usually found associated with other sulfides or oxides in quartz veins, sedimentary rock, and metamorphic rock, as well as in coal beds and as a replacement mineral in fossils. Despite being nicknamed fool's gold, pyrite is sometimes found in association with small quantities of gold.
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- <M>Pyrite Group</M>. The isometric (cubic) polymorph of orthorhombic <M>marcasite</M>. Pyrite is a very common mineral, found in a wide variety of geological formations from sedimentary deposits to hydrothermal veins and as a constituent of metamorphic rocks.
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Pyre A pyre (Greek: πυρά; pyra, pyrá from, πῦρ, pyr), fire also known as a funeral, pyre is a, structure usually made of, wood for burning a body as part of a funeral rite or. Execution as a form of, cremation a body is placed upon or under the, pyre which is then set on. fire
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The Mineral pyrite Pyrite can form in extremely well-crystallized examples of cubes, pyritohedrons, and octahedrons. Combinations of these forms also occur. An icosahedron formed from a combination of an octahedron and pyritohedron is also known. Pyrite crystals frequently form penetration twinning, especially in the cubic form. Cubes are sometimes elongated in rectangular form. Also occurs massive, radiating, grainy, flaky, drusy, mammilary, encrusting, nodular, tuberose, fibrous, in concretions, and as groups of small crystals.
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The Mineral pyrite Crystal Forms and Aggregates. Pyrite can form in extremely well-crystallized examples of cubes, pyritohedrons, and octahedrons. Combinations of these forms also occur. An icosahedron formed from a combination of an octahedron and pyritohedron is also known.Pyrite crystals frequently form penetration twinning, especially in the cubic form.Cubes are sometimes elongated in rectangular form. Also occurs massive, radiating, grainy, flaky, drusy, mammilary, encrusting, nodular, tuberose, fibrous, in concretions, and as groups of small crystals.ombinations of these forms also occur. An icosahedron formed from a combination of an octahedron and pyritohedron is also known. Pyrite crystals frequently form penetration twinning, especially in the cubic form. Cubes are sometimes elongated in rectangular form.
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pyrite 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. The color has also led to the nicknames brass, brazzle, and Brazil, primarily used to refer to pyrite found in coal.t is distinguishable from native gold by its hardness, brittleness and crystal form. Natural gold tends to be anhedral (irregularly shaped), whereas pyrite comes as either cubes or multifaceted crystals. Chalcopyrite is brighter yellow with a greenish hue when wet and is softer (3.5–4 on Mohs' scale).
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Why does pyrite form cubic crystals? 2. Pyrite ($\ce{FeS2}$) forms cubic crystals, like these ones: I know that the crystal structure is primitive cubic, but I don’t see how cubic structure on the molecular level translates to cubic structure on much larger scales.yrite can actually come in a range of crystalline morphologies, as seen below: Image source: Modelling nanoscale $\ce{FeS2}$ formation in sulfur rich conditions, who state that the shape is dependent on the concentration of sulphur during its formation.
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- Gold: Gold is much softer than pyrite, does not exhibit crystals, and is a very malleable material (easily shaped). Pyrite is harder than glass or most metals, is very brittle and often occurs as cubes or octahedrons with faint striations or lines on some crystal faces.halcopyrite: It may be difficult to distinguish chalcopyrite and pyrite by color or streak, although chalcopyrite tends to form a more iridescent tarnish and seldom exhibits good crystal shapes. Hence, hardness is often the easiest way to distinguish between these two minerals.
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Pyrite Pyrite remains in commercial use for the production of sulfur dioxide, for use in such applications as the paper industry, and in the manufacture of sulfuric acid. Thermal decomposition of pyrite into FeS (iron(II) sulfide) and elemental sulfur starts at 540 °C; at around 700 °C pS2 is about 1 atm.
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pyrite Pyrite is usually found associated with other sulfides or oxides in quartz veins, sedimentary rock, and metamorphic rock, as well as in coal beds and as a replacement mineral in fossils. Despite being nicknamed fool's gold, pyrite is sometimes found in association with small quantities of gold.Gold and arsenic occur as a coupled substitution in the pyrite structure. In the Carlin–type gold deposits, arsenian pyrite contains up to 0.37 wt% gold.espite being nicknamed fool's gold, pyrite is sometimes found in association with small quantities of gold. Gold and arsenic occur as a coupled substitution in the pyrite structure. In the Carlin–type gold deposits, arsenian pyrite contains up to 0.37 wt% gold.
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What Is Pyrite (Fool's Gold)? - Properties, Definition & Facts Physical Properties. Pyrite rates a hardness of 6 to 6.5 on Mohs hardness scale, the scale used by geologists to describe a mineral's resistance to being scratched. For comparison, quartz has a hardness of 7, diamond has a hardness of 10, and gold has a hardness of 2.5.
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Pyrite •Pyrite, or iron pyrite, more commonly 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 is used to make m...
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Pyrite Pyrite is a brass-yellow mineral with a bright metallic luster. It has a chemical composition of iron disulfide (FeS 2) and is the most common sulfide mineral.It forms at high and low temperatures and occurs, usually in small quantities, in igneous, metamorphic and sedimentary rocks worldwide.owever, pyrite is often associated with gold. The two minerals often form together, and in some deposits pyrite contains enough included gold to warrant mining. Hand-specimens of pyrite are usually easy to identify. The mineral always has a brass-yellow color, a metallic luster and a high specific gravity.
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Pyroxene The pyroxenes are a group of important rock-forming inosilicate minerals found in many igneous and metamorphic rocks. Pyroxenes are silicon-aluminum oxides with Ca, Na, Fe, Mg, Zn, Mn, Li substituting for Si and Al. The general formula is XY2O6. Although aluminium substitutes extensively for silicon in silicates such as feldspars and amphiboles, the substitution occurs only to a limited extent in most pyroxenes. They share a common structure consisting of single chains of silica tetrahedra and t
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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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- Definition of pyrite : a common mineral that consists of iron disulfide, has a pale brass-yellow color and metallic luster, and is burned in making sulfur dioxide and sulfuric acid new!
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