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Topic: Barite

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	Barite - Wikipedia, the free encyclopedia (Site not responding. Last check: 2007-10-21)
		Barite commonly occurs in lead-zinc veins in limestones, in hot spring deposits, and with hematite ore. It is often associated with the minerals anglesite and celestite.
		Barite that is used as an aggregate in a "heavy" cement is crushed and screened to a uniform size.
		Although barite contains a "heavy" metal (barium), it is not considered to be a toxic chemical by most governments because of its extreme insolubility.
	en.wikipedia.org /wiki/Barite (241 words)

	BARITE. The Columbia Encyclopedia: Sixth Edition. 2000 (Site not responding. Last check: 2007-10-21)
		Barite is used as a commercial source of barium and many of its compounds.
		Ground barite is used as a filler in the manufacture of linoleum, oilcloth, paper and textile manufacturing, rubber, and plastics.
		Prime white, a bleached barite, is used as a pigment in white paint but is not as satisfactory as blanc fixe, a chemically precipitated barium sulfate, or lithopone, a mixture of barium sulfate, zinc sulfide, and zinc oxide.
	www.bartleby.com /aol/65/ba/barite.html (171 words)

	Barite (Site not responding. Last check: 2007-10-21)
		Barite deposits in Arkansas are present in the Ouachita Mountain province, specifically in Hot Spring, Montgomery, and Polk Counties, and near Dierks in Howard County in the West Gulf Coastal Plain.
		Barite was first discovered in 1888 in Arkansas in Montgomery County and in 1900 was recognized near Magnet Cove in Hot Spring County.
		The barite is typically a grayish to white, granular to finely crystalline rock, and is easily identified by its relative softness, high density for a nonmetallic mineral, and by a sulfurous odor when hit by a hammer or scratched with a knife blade.
	www.state.ar.us /agc/barite.htm (815 words)

	Prospecting for Barite
		Barite's specific gravity is only 13% lower than the mineral magnetite, which is the magnetic constituent of the placer miners familiar "fl sand." Fragments of barite in a stream, wash or crushed outcrop will concentrate with the fl sand in a pan.
		The barite must occur in such a mode as to either be of a minimum specific gravity of 4.25 or is amenable to simple concentration.
		Principal uses for barite are as a weighting agent in oil well drilling mud, which accounts for about 90% of consumption, in barium com-pounds, in paints, in glass, in paper fillers, and in refining sugar.
	www.admmr.state.az.us /circ4barite.htm (1179 words)

	JPT (Jul 2003): Fate of Mercury in Drilling-Fluid Barite in the Marine Environment (Site not responding. Last check: 2007-10-21)
		Although barite is, essentially, a nontoxic solid material, the fate and effects of selected impurities in barite, such as mercury, must be a consideration in the environmental assessment of drilling-waste disposal.
		The overall leaching behavior of the mercury in barite is consistent with the interpretation that mercury is primarily present as sulfide or less-soluble oxide phases and that little or none of the mercury is present as chlorides, soluble sulfates, carbonates or labile metal oxides.
		Measurements of the mercury released from barite under simulated digestive tract conditions indicate that mercury in barite is not extracted under conditions in animal digestive tracts.
	www.spe.org /spe/jpt/jsp/jptpapersynopsis/0,2439,1104_11040_1156334_1175014,00.html (1790 words)

	Barite from El Portal California
		Barite occurs as an equigranular aggregate, the grade-size varying from one band to another, 0.1-0.5 mm.
		Its associated impurities are similar to those found in the barite, and do not call for further comment, except to remark that where barite occurs, it may be locally a replacement of witherite.
		Barite, also, is unchanged, though a small amount of redistribution and recrystallization has taken place.
	www.minsocam.org /msa/collectors_corner/arc/cabarite.htm (1819 words)

	Rossi Mine - Barite, Elko County, Nevada
		The barite at the Rossi Mine is of the gray, sedimentary, bedded, variety instead of the white, hydrothermal, vein-type.
		Barite is primarily used for its property of being heavy.
		The primary impurity in the Rossi barite is silica (quartz).
	www.elkorose.com /rossimine.html (2515 words)

	The mineral barite
		Barite often replaces other minerals, and may even replace organic materials such as wood, shells, and fossils.
		Barite specimens from certain locations are brown from sand inclusions, and may occur in rosette aggregates that strikingly resemble a flower.
		Barite is a very popular mineral among mineral collectors and fine specimens are greatly sought after.
	www.minerals.net /mineral/sulfates/barite/barite.htm (422 words)

	Rocks & Minerals: Colorado barite (Site not responding. Last check: 2007-10-21)
		Barite (barium sulfate) is the most important mineral of barium; it is reported from numerous localities worldwide where it occurs as fine specimens in many habits and colors.
		Barite, one of the most desirable minerals from the mine, occurs as plates of gemmy golden-yellow crystals that are eagerly sought by mineral collectors.
		Some of the finest recent barite specimens from this mine were obtained in 1988 from a rug that contained modified, tabular, golden barite crystals to 2 inches across perched on a matrix consisting of mounds of lustrous pyrite crystals.
	www.findarticles.com /p/articles/mi_m0GDX/is_1998_July/ai_53288931 (1403 words)

	barite.htm
		Its habit in the district was a white, gray, or brownish coarse cleavable masses, platy to bladed crystals, fibrous veins, or fine-grained banded nodular to colloform masses.
		Barite also notably occurs in the pegmatites near Wausau, Marathon County, and as crystals in veins in the iron formation in Iron County, most notably the Montreal Mine.
		The barite at the Porter Mine is associated with galena and described as coarse white crystals and masses.
	www.uwrf.edu /~wc01/barite.htm (1106 words)

	BARITE Chapter 24. Sulfates, borates, tungstates, and molybdates (Site not responding. Last check: 2007-10-21)
		Barite, a barium sulfate mineral of the barite group, was noted by Genth (1891) and Penfield (1897) from Franklin, but was surely known earlier.
		Barite fluorescence in shortwave ultraviolet varies (white, blue-white, and light brownish-yellow colors are known); the fluorescence in longwave is weaker.
		Barite is also found with hancockite, clinohedrite, prehnite, and manganaxinite in highly recrystallized material; with calcite as 3-4 cm rock-locked crystals with rhodonite in primary assemblages; and in many other associations.
	simplethinking.com /dunn/ch24/barite.stm (442 words)

	National Lead Company and Yosemite Valley Railroad
		The barite deposits, in the form of irregular lenses in schists and slates, appear to be part of the Calaveras formation, a wide zone of metamorphics of Carboniferous age, intruded by granites and granodiorites.
		A barite lens about 150 ft. maximum width and about 1,000 ft. in length, south of the river and several hundred feet above it, is being mined by quarry and glory-hole methods.
		From the bin the barite is discharged by a revolving rake to the center discharge, and delivered by screw conveyors and elevators to four sacking machines, designed at the plant.
	www.yosemitevalleyrailroad.com /Barites.Dir/Barites.Page-04.html (902 words)

	BARITE CAPITAL OF THE WORLD (Site not responding. Last check: 2007-10-21)
		The presence of lumps of barite in the clay mean good hand mining ground, for they yielded enough weight to justify the necessary digging.
		Barite and clay were usually separated in a 'rattle box,' a frame with a screen deck, built somewhat like a baby's cradle, so it could be rocked back and forth to rattle the chinks around and break off the clay.
		Around 1926 the use of barite as a weighting agent in oil well drilling was introduced, with that use increasing steadily since that time.
	www.potosionline.com /history_archive/barite-capital.html (840 words)

	Business Wire: Consultant Report Renders Robex Bullish on Barite. @ HighBeam Research (Site not responding. Last check: 2007-10-21)
		Barite is an important commercial mineral with a variety of uses.
		Expanding uses are as a packing material, as an additive in the fabrication of disc brakes, and as a screen for intense radiation mixed with cement mortar.
		The report notes that since the U.S. barite producers are concentrated in the Southwest U.S., and given increasing rail transportation costs, that there is export potential for Robex barite into the Eastern American markets, particularly where the weakness of the Canadian Dollar permits offering competitive prices.
	www.highbeam.com /library/doc0.asp?DOCID=1G1:19997604&refid=ip_encyclopedia_hf (572 words)

	Barite Webpage
		Barite is chemically and structurally similar to these minerals, although solid solutions between the tree are limited in nature.
		Barite is used in oil-well-drilling muds and in the manufacture of glass and paints.
		Barite occurs with anhydrite, apatite, and calcite in carbonates.
	www.und.nodak.edu /instruct/mineral/geol318/webpage/labonte (667 words)

	Rocks and Minerals Tour: Envi Sci Dept, UVA
		A concretion of barite in some sandstones forms a beautiful rose like structure called a "desert rose." Barite can be found all around the world and usually occurs in veins with ores of lead, and dolomite.
		Barite can be ground to form a filler for the manufacture of linoleum, oilcloth, rubber, plastics, paper and textiles.
		Barite is commonly found in Virginia as crystals in cavities, massive nodules and vein fillings.
	www.evsc.virginia.edu /tours/rockmin/barite.shtml (246 words)

	Barite (Site not responding. Last check: 2007-10-21)
		Barite in small amounts is a rather widely distributed mineral at Franklin.
		Several specimens from the Parker shaft were seen, in which the barite was faintly bluish and filled cavities in axinite and rhodonite.
		Prismatic crystals of pale-yellow barite with the forms c(001), d(102), and o(011) incrust the specimen of friedelite from the Taylor mine that was found in the Kemble collection.
	simplethinking.com /palache/barite.stm (202 words)

	Oilfield Glossary: Term 'barite' (Site not responding. Last check: 2007-10-21)
		Barite is of significance to petrophysicists because excess barite can require a correction factor in some well log measurements.
		Used as a weighting agent for all types of drilling fluids, barites are mined in many areas worldwide and shipped as ore to grinding plants in strategic locations.
		Contaminants in barite, such as cement, siderite, pyrrhotite, gypsum and anhydrite, can cause problems in certain mud systems and should be evaluated in any quality assurance program for drilling-mud additives.
	www.glossary.oilfield.slb.com /Display.cfm?Term=barite (262 words)

	Barite Mineralization and Detachment Faulting
		Barite occurs as coarsely crystalline aggregates, often displaying extensive brecciation, The barite veins strike to the northwest parallel to the enclosing sedimentary hosts.
		Barite was deposited in a range of temperatures from 140° to 300°C. Each sub-district has its own unique range of temperatures.
		Barite occurs within high angle fractures in both upper and lower plate rocks of the WHMR detachment fault suggesting barite deposition late in the detachment event.
	geology.csupomona.edu /drjessey/research/barite.htm (1806 words)

	Barite Roses (Site not responding. Last check: 2007-10-21)
		This is a cluster of barite enclosing sand from the Garber sandstone in Cleveland County, Oklahoma.
		This piece is more sand than it is barite, like some of the gypsum and calcite sand specimens are.
		The barite roses are found only in the upper, weathered part of the Garber sandstone where they are being deposited by the groundwater.
	www.museums.udel.edu /mineral/mineral_site/displaycollection/Sulfates/D5944.html (78 words)

	PIRSA Minerals - Mineral Resource Potential - Barite (Site not responding. Last check: 2007-10-21)
		Ore is trucked 160 km to a treatment plant at Quorn where three industrial grades of barite - A, Standard and B - depending on colour, are produced for use in surface coatings, plastics fillers and mould coatings at Olympic Dam.
		The barite is of drilling grade due to the presence of silica and iron oxide.
		Mount Whyalla barite mine, 24 km northwest of Whyalla, was selectively worked over a distance of 1 km from a series of vertical lenses in the Pandurra Formation.
	www.pir.sa.gov.au /pages/minerals/commodity/barite.htm:sectID=245&tempID=7 (959 words)

	Marine barite: A recorder of oceanic chemistry and productivity (Site not responding. Last check: 2007-10-21)
		Barite is a ubiquitous minor phase in oceanic particulate matter, and pelagic sediments, particularly underlying regions of high biological productivity.
		Barite formation appears to be mediated by biological activity in the upper water column.
		Barite is relatively insoluble and thus is less prone to burial diagenetic exchange than calcite.
	www.mbari.org /seminars/1998/jun05_paytan.html (244 words)

	The Mineralogy of Nova Scotia - Barite
		Barite is also the source for barium which has applications in glassmaking and medicine.
		At this location, the barite is color zoned such that the main portion of the crystal is colorless while the tapered endfaces of the crystal are white.
		The barites tend to be tabular, and simple in the number of forms, but with different overall shapes.
	nsminerals.atspace.com /barite.html (1683 words)

	Mineral Information Institute - Barium (Site not responding. Last check: 2007-10-21)
		Barite (spelled baryte in British publications) was named from the Greek word baros which means weighty, a reference to its unusually high specific gravity.
		Most barite is mined from layers of sedimentary rock which formed when barite precipitated onto the bottom of the ocean.
		Beyond this, barite is used as an additive to paints, enamels, and plastics, in the production of so-called "lead" crystal or "leaded" glassglass, stops radiation from computer monitors and television tubes, and as the source of barium chemicals.
	resourcescommittee.house.gov /subcommittees/emr/usgsweb/descriptions/descBarite.html (579 words)

	Rocks & Minerals: Barite from the Cedar Creek Anticline, Glendive, Montana (Site not responding. Last check: 2007-10-21)
		Concretions containing barite range in size from less than 1 foot to 4 feet in diameter and are generally elliptical in shape.
		Specimens occur in all exposures of the barite zone, but it appears that the concretions in shale adjacent to both the longitudinal and transverse faults contain the highest barite concentrations.
		They do contain barite, but it is normally in the form of small crystals that are hard to extract unbroken.
	www.findarticles.com /p/articles/mi_m0GDX/is_2_78/ai_98370209 (1293 words)

	Barite (Site not responding. Last check: 2007-10-21)
		Barite (barium sulphate) is a commonly occuring mineral that tends to form in attractive clusters and circular 'flowers' of concentric bladed crystals (when these are stained red by the presence of iron they are known as 'Desert Roses').
		Barite is used metaphysically to help control and preserve energy and this quality makes it one of the most useful 'magical minerals' for people who are beginning a course of psychic exercises or trying to learn more about their own personal energy.
		Barite is common in the United States and seems to have been widely used by Native Americans in religious and healing rituals.
	www.snazzdragon.com /caz/bar.html (1085 words)

	Candente Resource Corp. - Projects - Peru - Thu Oct 20, 2005
		A massive barite bed/vein, one metre thick, conformably overlies a cherty horizon and underlies a tuff bed on the El Alamo Property.
		On the western edge of the B property, barite occurs both as veins crosscutting the sequence of tuffs and volcanic flows and as clasts in a breccia body along with clasts of chert and other volcanic rocks.
		Barite beds/veins occur conformably within a sequence of heterolithic breccias, bomb breccias, tuffs and andesitic flows.
	www.candente.com /s/Projects_Peru.asp?PropertyInfoID=654&View=7 (202 words)

	Baker Hughes Inteq, Dresser Industries, Inc. and M-1 Drilling Fluids Request for Business Review Letter
		Barite is a soft dense, chemically inert material that is used as a weighing agent in oil well-drilling fluids to counteract certain pressures that result from well-drilling and operation.
		You assert that barite accounts for less than 20 percent of the selling price of the drilling fluid in which it is incorporated and considerably less than 20 percent of the packages of goods and services often sold to oil-drilling services customers.
		In addition, the commonly purchased barite would not account for all of the barite used by the three firms.
	www.usdoj.gov /atr/public/busreview/0653.htm (956 words)

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