
	Where results make sense

Topic: Polyhalite

In the News (Sat 6 Sep 08)

Gordon Brown

Derby County

Mike Huckabee

Lute Olson

Pearl Harbor

Sonia Gandhi

Ricky Hatton

Narendra Modi

Jesus Christ

Rudy Giuliani

	Polyhalite - Wikipedia, the free encyclopedia
		Polyhalite is an evaporite mineral, a hydrated sulfate of potassium, calcium and magnesium with formula: K
		It is typically colorless, white to gray, although it may be brick red due to iron oxide inclusions.
		Polyhalite was first described in 1818 for specimens from its type locality in Salzberg, Austria.
	en.wikipedia.org /wiki/Polyhalite (167 words)

	Discussion of Cross Sections
		A maximum of nine polyhalite ± anhydrite-halite-mudstone cycles are found in the thick part of the master cycle.
		Polyhalite replacement increases westward across the Central Basin Platform, and this interval is correlated with an interval containing polyhalite beds in the Delaware Basin.
		This interval contains abundant polyhalite beds that are correlated to an interval with abundant polyhalite beds in the Delaware Basin.
	www.beg.utexas.edu /environqlty/salt/discussion.htm (969 words)

	Tansill and Salado Formations
		In core in the Palo Duro Basin and the Delaware Basin, polyhalite is observed to occur as needles and fine-grained masses that are typically red or pink because of thin iron-oxide coatings on polyhalite crystals.
		The distribution of polyhalite is irregular on a fine scale, where it forms fabric-specific replacement textures and nodules, and on an intermediate scale, where it may replace only the floors of large polygons (Robert Holt, IT Corporation, 1990, personal communication), as well as on a regional scale.
		Polyhalite has relatively low solubility in brine, so polyhalite beds are intervals of normal hole size on caliper logs, although thin beds within salt are commonly mechanically broken.
	www.beg.utexas.edu /environqlty/salt/salado.htm (1053 words)

	POLYHALITE (Hydrated Potassium Calcium Magnesium Sulfate)
		Polyhalite is named in allusion to its many metal ions in its formula or literally translated "many salts".
		Polyhalite is a potassium, calcium and magnesium sulfate salt.
		Although it is an evaporite mineral, polyhalite is otherwise not related to the mineral halite.
	mineral.galleries.com /minerals/sulfates/polyhali/polyhali.htm (294 words)

	Abstract 2001-I
		Polyhalite from red bedded polyhalite rock occurring at the places of wedging out of potash salt deposits and polyhalite from polyhalite-anhydrite strata which are situated at the salt breccia near the contact of potash salt deposits have been investigated.
		Radiometric age determined for polyhalite from polyhalite-anhydrite layers turned out to be younger, from 5.7 to 12.3 Ma.
		The origin of polyhalite is connected with tectonic events during the history of the Carpathian foredeep geological development.
	www.franko.lviv.ua /faculty/geology/English/Science/Mineralogy/Abstract-2001-I.htm (2118 words)

	MEERS MICROSEEP METHOD
		In the Oxidized area, the soil is rich in Gypsum and Polyhalite.
		The Polyhalite has a very high concentration of Potassium that is seen by the Potassium measuring device.
		Bismuth becomes very soluble in water in an oxidizing environment and is therefore dissolved and moved away by groundwater; however, it precipitates in the Reducing area, so the microseep area has a high Bismuth content.
	members.tripod.com /microseep/page3.html (688 words)

	Potassium (K) (Site not responding. Last check: 2007-11-01)
		Potassium, discovered and named in 1807 by Sir Humphry Davy, is a chemically reactive, extremely soft metallic element.
		Certain minerals (such as sylvite, carnallite, langbeinite and polyhalite) are found in ancient lake and sea beds.
		They have formed rather large deposits from which potassium and its salts can readily be obtained.
	www.bayerus.com /msms/fun/pages/periodic/potassium/index.html (172 words)

	Stratigraphische Gliederung der Z2-(Staßfurt-)Salzfolge in den Niederlanden: Beschreibung und Anwendung bei der ... (Site not responding. Last check: 2007-11-01)
		Based on the occurrence of polyhalite beds, this salt section can be divided into three main cycles.
		The polyhalite beds are considered to be of primary origin, and to record marjor sea-water incursions in the evaporite basin.
		The cyclicity is regarded as isochronuous, and is attributed to salinity fluctuation in the Dutch part of the Zechstein Basin.
	www.schweizerbart.de /pubs/journals/0012-0189/paper/146/458 (481 words)

	School of BEES - Salinity Mapping With Hyperspectral Imagery
		Salt scald spectra acquired in 1993 clearly showed the presence of gypsum (Bennett, 1998, Taylor et al, 1994) but spectra acquired in May 1999 have features characteristic of damp halite with minor amounts of a hydrated sulphate minerals such as bassanite being indicated by hydrate-related absorption features at 980, 1170 and 1740 nm.
		Salt scald spectra extracted from images acquired two weeks earlier suggest the presence of polyhalite or eugsterite but these minerals were not conclusively confirmed by XRD analysis.
		Salt scald spectra and library spectra for polyhalite, gypsum and an other hydrated calcium sulphate, bassanite 2CaSO4.H2O are illustrated.
	www.bees.unsw.edu.au /school/staff/taylor/salinity1.html (481 words)

	Rx for Soils and Crops
		It has about 22% K. Polyhalite is a double salt of Ca and K sulfates.
		It has about 10 to 15% K. Like Sul-Po-Mag, polyhalite is very soluble, not much different from KCl.
		There are large deposits of polyhalite in Utah, Texas, Poland, and Egypt.
	www.ctahr.hawaii.edu /tpss/research_extension/rxsoil/organic.htm (3494 words)

	NERM 2004 Element of the Day (Site not responding. Last check: 2007-11-01)
		Potassium's chemical symbol comes from the Latin word for alkali, kalium.
		Potassium can be obtained from the minerals sylvite (KCl), carnallite (KCl·MgCl2·6H2O), langbeinite (K2Mg2(SO4)3) and polyhalite (K2Ca2Mg(SO4)4·2H2O).
		These minerals are often found in ancient lake and sea beds.
	www.chem.rochester.edu /~rocacs/nerm/eotd/eotd_26.htm (204 words)

	== Trade Jaint Inc. == (Site not responding. Last check: 2007-11-01)
		Actually, rock salt is not K2SO4; it is NaCl.
		It can have impurities of gypsum (CaSO4) and sylvite (KCl) but it is very rare to find potassium sulfate as a mineral, although occasionally polyhalite (K2Ca2Mg(SO4)4.2H2O) is found associated with rock salt deposits.
		It is typically formed by the evaporation of salty water (such as sea water) which contains dissolved Na+ and Cl- ions.
	www.tradejiant.com /default.html (185 words)

	Glauberite (Site not responding. Last check: 2007-11-01)
		OCCURRENCE - Found in saline deposits as an evaporite mineral of marine or lacustrine origin.
		ASSOCIATED MINERALS - Halite, Polyhalite, Anhydrite, Thenardite, Gypsum and Mirabilite.
		MINERAL NAME - The name is in reference to the German Chemist Rudolf Glauber who is associated with "Glauber's Salt" (Na of which Glauberite contains in abundance.
	www.gc.maricopa.edu /earthsci/imagearchive/glauberite.htm (289 words)

	Documentation relating to the Non-vertebrate paleontological and geologicalcollections
		Report on the mineral resources of Leon County, Texas.
		Cunningham, W. The potassium sulfate mineral polyhalite in Texas.
		Eckel, E. Progress report on the study of the iron ore deposits of
	www.utexas.edu /tmm/npl/general/Chris_D's_pub_list_for_web.htm (4808 words)

Try your search on: Qwika (all wikis)