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pyrrhotite

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Pyrrhotite - an overview | ScienceDirect Topics
Pyrrhotite (Fig. 1.11) is an unusual iron sulfide with variable iron content [Fe ( 1 − x ) S ( x = 0 – 0.2 ) ]. The color ranges between bronze yellow and copper-red with black streak and metallic luster. The hardness varies between 3.5 and 4.5 on the Mohs scale and an average specific gravity of 4.6. www.sciencedirect.com
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Pyrrhotite - Wikipedia
Pyrrhotite is an iron sulfide mineral with the formula Fe(1−x)S (x = 0 to 0.125). It is an iron-deficient nonstoichiometric variant of FeS, the mineral ... en.wikipedia.org
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Pyrrhotite: Mineral information, data and localities.
Pyrrhotite is found with pentlandite in basic igneous rocks, veins, and metamorphic rocks. It is also often found with pyrite, marcasite, and magnetite. www.mindat.org
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pyrrhotite
pyrrhotite Min. (ˈpɪrətaɪt) [Altered by Dana, 1868, from prec.: see -ite1 2 b.] A widely distributed magnetic sulphide of iron, occurring massive and amorphous, having a granular structure, and a colour between bronze and copper-red.1868 Dana Min. (ed. 5) 59 The niccoliferous Pyrrhotite is the one t... Oxford English Dictionary
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How do pyrite and pyrrhotite damage building foundations?
Pyrite and pyrrhotite are minerals known as iron sulfides. When iron sulfides are exposed to water and oxygen, a series of chemical reactions breaks down the ... profession.americangeosciences.org
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New USGS Map Helps Identify Where Pyrrhotite, a Mineral that Can ...
The new national map shows that pyrrhotite may be distributed widely in metamorphic rock along the Appalachian Mountains and in smaller pockets in the western ... www.usgs.gov
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[PDF] Pyrrhotite - RRuff
2001-2005 Mineral Data Publishing, version 1. Crystal Data: Monoclinic, pseudohexagonal. Point Group: 2/m. Crystals typically tabular. rruff.geo.arizona.edu
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Frequently Asked Questions - Trinity Concrete Analysis
What is pyrrhotite? Pyrrhotite (PEER-o-tight) is a naturally occurring iron sulfide mineral that is often found in marine sedimentary rocks. trinanalysis.domains.trincoll.edu
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Pyrrhotite Mineral Data - Mineralogy Database
Lustrous sharp crystals of pyrrhotite to 3.5 cm in size with minor sphalerite and chalcopyrite. Location: Nikolaevskiy mine, Dal'negors, Primorskiy Kray, ... webmineral.com
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Home Foundations Are Crumbling. This Mineral Is to Blame.
The culprit behind fissures like those in their neighbors' homes was pyrrhotite, a mineral made up of sulfur and iron found in some concrete aggregates. undark.org
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Pyrrhotite Gemstone: Properties, Meanings, Value & More
Pyrrhotite [pronounced pir-uh-tahyt] is a bronze to brassy iron sulfide gemstone with a metallic luster. It's also the magnetic cousin of ... www.gemrockauctions.com
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pyrrhotine
pyrrhotine Min. (ˈpɪrətaɪn) [Named 1835 f. Gr. πυρρότης redness + -ine5.] = pyrrhotite.1849 J. Nicol Min. 452 Pyrrhotine, Breithaupt; magnetic iron pyrites. 1881 Metal World No. 21. 323 The ore of the Gap Mine is..a nickeliferous pyrrhotine,..and is extremely difficult to work. Oxford English Dictionary
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Mackinawite
occurs in serpentinized peridotites as a hydrothermal alteration product, in meteorites, and in association with chalcopyrite, cubanite, pentlandite, pyrrhotite Many iron sulfide minerals may exist in the transition between poorly ordered mackinawite and crystalline pyrite such as greigite, smithite, and pyrrhotite wikipedia.org
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Mohawkite
Its color may resemble pyrrhotite, but unlike pyrrhotite, mohawkite is not magnetic. wikipedia.org
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Uchucchacuaite
It occurs with alabandite, galena, benavidesite, sphalerite, pyrite, pyrrhotite and arsenopyrite in the Peru deposit. wikipedia.org
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