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Topic: Pyrite


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  PYRITE (Iron Sulfide)
Pyrite is difficult to distinguish from marcasite when a lack of clear indicators exists.
Pyrite's structure is analogous to galena's structure with a formula of PbS.
Pyrite is not as ecomonical as these ores possibly due to their tendency to form larger concentrations of more easily mined material.
mineral.galleries.com /minerals/sulfides/pyrite/pyrite.htm   (542 words)

  
  Pyrites - LoveToKnow 1911
As pyrites, from its brass-yellow colour, is sometimes mistaken for gold, it has been vulgarly called "fool's gold." Traces of thallium, which are present in some pyrites, may be detected in the flues of the furnaces where the metal is roasted.
Pyrites low in sulphur is incapable of sustaining its own combustion without the aid of an external source of heat, and 45% of sulphur is, for economic reasons, usually regarded as the lowest admissible for sulphuric acid manufacture.
From Indiana and Ohio a quantity of pyrites is obtained as a by-product in coalmining.
www.1911encyclopedia.org /Pyrites   (1418 words)

  
 pyrite.htm
BROWN COUNTY: Pyrite is abundant in the dolostones and shales associated with the oolitic iron ore of the Neda Formation.
MANITOWOC COUNTY: Pyrite occurs as cubes, octahedra and pyritohedra, sometimes iridescent, with calcite, fluorite, marcasite and strontianite in vugs in dolostone in the quarry on the north edge of Valders.
Iridescent pyrite crystals occur with marcasite, calcite, dolomite and fluorite in vugs in dolostone in the quarries on Tullar road, in Neenah.
www.uwrf.edu /~wc01/pyrite.htm   (2191 words)

  
 Pyrite fool's gold
Pyrite is a polymorph of marcasite, which means that it has the same chemistry, FeS2, as marcasite; but a different structure and therefore different symmetry and crystal shapes.
Pyrite is difficult to distinguish from marcasite when a lack of clear indicators exists.
Pyrite is not as ecomonical as these ores possibly due to their tendency to form larger concentrations of more easily mined material.
www.california-gold-rush-miner.us /gold-minerals.htm   (657 words)

  
 Pyrite Mineral Data
From the Greek, pyrites lithos, "stone which strikes fire," in allusion to the sparking produced when iron is struck by a lump of pyrite.
Comments: Lustrous 1 - 2 cm cubes of pyrite encased in a very fine-grained sedimentary marlstone (clay and calcite).
Warning: this large pop-up is very compute intensive and may not work well with some computers.
webmineral.com /data/Pyrite.shtml   (265 words)

  
 Pyrite: Pyrite mineral information and data.
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.
Pyrite is quite easy to distinguish from Gold, it is much lighter, but harder and cannot be scratched with a fingernail or pocket knife.
Yund, R.A. Hall (1970), Kinetics and mechanism of pyrite exsolution from pyrrhotite: Journal of Petrology: 11: 381-404.
www.mindat.org /min-3314.html   (887 words)

  
 Thaigem.com | Info Center | A-Z Gemstones | From Gemology To Mythology Learn More About Pyrite At Our A-Z Gemstones   (Site not responding. Last check: )
Pyrite grains are lighter and tougher than gold, and have broken faces, properties that are not normally found in gold.
Pyrite is present in igneous rocks as an accessory mineral, in sedimentary rocks, especially fl shale, and in metamorphic rocks, most notably in slates.
Pyrite is sometimes found as a replacement mineral in fossils where it takes the place of weaker minerals present in certain bones and shells.
www.thaigem.com /infocenter/buyer_guides/a-z_gemstones/pyrite.asp   (426 words)

  
 Pyrite, FeS2, Iron Sulfide
However, pyrite is often associated with the presence of gold and copper, and locating fool's gold may mean the real thing isn't far off.
Pyrite is a polymorph of marcasite, which means that it has the same chemistry, FeS2, as marcasite; but a different structure and therefore different symmetry and crystal shapes.
Pyrite is not as ecomonical as these ores possibly due to their tendency to form larger concentrations of more easily mined material.
www.chem.ox.ac.uk /it_lectures/chemistry/mom/pyrite/pyrite.html   (644 words)

  
 Pyrite - Search Results - MSN Encarta
Pyrite, also iron pyrites or fool's gold, mineral composed of iron sulfide, FeS
Pyrrhotite (Greek pyrrhos, “flame-colored”), also magnetic pyrites, mineral possessing magnetic properties and composed of iron sulfide.
arsenic, asbestos, asphalt, bauxite, carbon, clay, coal, coke, feldspar, fluorite, graphite, gypsum, jet, lime, mica, pyrite, quartz, rock, silicate,...
ca.encarta.msn.com /Pyrite.html   (87 words)

  
 Pyrite   (Site not responding. Last check: )
Nodules of pyrite have been found in prehistoric burial mounds, which suggests their use as a means of producing fire.
Pyrite is called fool's gold because its color may deceive the novice into thinking he has discovered a gold nugget.
Pyrite weathers rapidly to hydrated iron oxide, goethite, or limonite.
geology.csupomona.edu /alert/mineral/pyrite.htm   (272 words)

  
 Pyrite (zi ran tong) | acupuncturetoday.com
Although pyrite is not an herb, it is nevertheless an important component of herbal medicine.
According to the principles of traditional Chinese medicine, pyrite is acrid and mild, and is associated with the Kidney and Liver meridians.
Pyrite should not be administered to patients diagnosed with yin deficiency with heat, or patients who have been diagnosed with blood deficiency.
www.acupuncturetoday.com /herbcentral/pyrite.php   (386 words)

  
 Pyrite
Franklin: The most interesting occurrence of pyrite is in the Franklin limestone, notably in the Fowler and Furnace quarries and in that of the Franklin Iron Company.
Pyrite is unknown in the zinc ores themselves but is not uncommon in secondary veins traversing them.
Thus it was noticed in transverse veins at and near the Trotter mine, at the Parker shaft, and in the Buckwheat mine, everywhere associated with and subordinate in amount to sphalerite.
franklin-sterlinghill.com /palache/pyrite.stm   (564 words)

  
 SpaTherapy.com | Pyrite
Although pyrite is not an herb, it is nevertheless an important component of herbal medicine.
According to the principles of traditional Chinese medicine, pyrite is acrid and mild, and is associated with the Kidney and Liver meridians.
Pyrite should not be administered to patients diagnosed with yin deficiency with heat, or patients who have been diagnosed with blood deficiency.
www.spatherapy.com /herbcentral/pyrite.php   (394 words)

  
 pyrite - HighBeam Encyclopedia   (Site not responding. Last check: )
The most common sulfide mineral, pyrite is widely distributed in rocks of all ages and types.
Some minerals resembling pyrite in appearance or composition are arsenopyrite, chalcopyrite (copper pyrites), cobaltite, marcasite (white iron pyrites or spear pyrites), and pyrrhotite (magnetic pyrites).
Oxidation rate of pyrite in acid sulfate soils: in situ measurements and modelling.
www.encyclopedia.com /doc/1E1-pyrite.html   (530 words)

  
 Geochemical Transactions | Full text | The effect of adsorbed lipid on pyrite oxidation under biotic conditions
Analysis of the bacterial population on the pyrite surface and in solution over the course of the experiments suggested that the pyrite oxidation was dependent in large part on the fraction of bacteria bound to the pyrite surface.
With regard to microbial-induced pyrite oxidation it is the general consensus that these microorganisms exert their impact on pyrite dissolution to a large degree by increasing the amount of available Fe reactant [i.e., convert Fe to Fe ], which increases the rate of pyrite oxidation [3,12,13].
The pyrite particles are not visible with epifluorescence microscopy (because the fluorochrome dyes used for staining cells specifically bind to protein and/or DNA only), and bacteria that are attached to the pyrite are visible as microcolonies (cell aggregates).
www.geochemicaltransactions.com /content/7/1/8   (4766 words)

  
 Iron Pyrite Information about the rare mineral specimen, gem or crystal
Pyrite is commonly associated with quartz and fine mineral specimen of pyrite on quartz or quartz on pyrite, seem to be rather abundant.
Pyrite is a frequent associate of all sorts of metal ores.
Pyrite is not as economical as these ores possibly due to their tendency to form larger concentrations of more easily mined material.
www.minerals-n-more.com /Pyrite_Info.html   (873 words)

  
 Fibrous Pyrite
Pyrite has also been recognized and described, but it has been considered less abundant than marcasite.
The two iron sulphides are intimately associated with the galena and sphalerite which occur as crevice and fissure fillings in the Galena dolomite of Ordovician age.
The present paper describes pyrite with a distinctly fibrous structure and suggests that this mineral is far more abundant than hitherto recognized.
www.minsocam.org /msa/collectors_corner/arc/pyritefib.htm   (774 words)

  
 Geochemical Transactions | Full text | Pyrite oxidation inhibition by a cross-linked lipid coating
Prior to its use, the pyrite was exposed to anoxic water at pH 2 (HCI was used to achieve this pH) to remove surface layers that were oxidized from extended exposure to the ambient atmosphere.
As a further control (see figure), iron release from pyrite, which had no adsorbed lipid, but was exposed to UV for the same amount of time as the lipid/pyrite system, was measured to be similar to pyrite without exposure to UV.
It is suggested that the hydrophobic nature of the lipid tails might retard pyrite oxidation by decreasing the interaction of the aqueous phase with the pyrite surface.
www.geochemicaltransactions.com /content/4/1/8   (2841 words)

  
 Print Pyrite
Pyrite is an iron ore that is called “Fool’s gold” because it looks so much like gold.
Pyrite is found in sedimentary, metamorphic, and igneous rock areas.
Pyrite is used for car batteries, appliances, food cans, paper, tools, some jewelry, and machinery.
library.thinkquest.org /05aug/00461/pyriteprint.htm   (200 words)

  
 The mineral pyrite ('fools gold')
Pyrite is commonly called "Fools Gold" because of its similarity in color, shape, and habit to Gold.
Pyrite was once used as the main source of sulfur, but is now only a minor source for sulfur and iron.
Pyrite from some localities is auriferous, and therefore is used as an ore of gold.
www.minerals.net /mineral/sulfides/pyrite/pyrite.htm   (614 words)

  
 Pyrite   (Site not responding. Last check: )
Pyrite is Fe S, an important example of a sulfide mineral.
Pyrite is a signifant mineral source for sulfur.
It is not used as an ore for iron because of the difficulty of separating the iron from the sulfur.
hyperphysics.phy-astr.gsu.edu /hbase/minerals/Pyrite.html   (105 words)

  
 The Cabin Branch Pyrite Mine, 1889-1920
The Cabin Branch Pyrite Mine employed residents of the villages of Batestown and Hickory Ridge, and the ‘fool’s gold’ that miners brought to the surface was processed into sulfuric acid and used in making soap, fertilizer, and gunpowder.
Pyrite was strategically important; while the U.S. military fought in the First World War (1917-1918), miners at the Cabin Branch mine were exempted from military conscription.
Kendell was seriously injured when one of the narrow-gauge trains that hauled pyrite ore to the Potomac River derailed in an accident that may have been racially motivated.
www.nps.gov /prwi/PyriteMine.htm   (1044 words)

  
 Dave's Down To Earth Rock Shop Pyrite!!!
Pyrite, named for the Greek word for fire "Pyr," as it produces sparks when it is struck with steel.
The color of pyrite is bright pale yellow to brass-yellow, gray-yellow often tarnished with a brown film of iron oxide.
Pyrite is the major cause of "Acid rain." When coal-containing pyrite is burned, sulfuric acid is formed by oxidation.
www.davesdowntoearthrockshop.com /pyrite.htm   (730 words)

  
 The Pyrite Project -- Integrating Your Palm Handheld with Your Linux Desktop --
Pyrite is used to communicate with and manage the data help on Palm devices; Pyrite Publisher is used to create and distribute Doc format e-books to Palm devices.
The relation between Pyrite and Sulfur can be better understood by noting that as Rob Tillotson developed Pyrite, he found that he had also been developing code that was useful outside the context of palm applications.
Pyrite Publisher sort of works, but only if you know enough Python and system administration to fix it, and even after it is fixed to the point of doing some work, it still has an overly large collection of weird bugs.
gnosis.cx /publish/programming/pyrite.html   (1946 words)

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