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Topic: Pseudomorph

	pseudomorphs
		In the case of pseudomorphs, the shape of a reacted mineral is retained by the mineral(s) that replaced it.
		Metamorphic pseudomorphs are of great interest because they contain a lot of information for reconstructing the reaction and pressure-temperature history of a rock.
		In the garnet on the left in this image, the high relief minerals in the pseudomorph may preserve an inclusion trail that was present in the garnet.
	www.geo.umn.edu /orgs/whitney/pseudomorphs.htm (505 words)

	Microstructures of prograde mineral growth in the Bushveld aureole
		Pseudomorphs after chloritoid and cordierite conserve volume but not Al or other species of low mobility, suggesting a breakdown mechanism controlled by an interface process such as the slow dissolution of the refractory porphyroblast phase, rather than by a transport step.
		The quartz-rich pseudomorphs indent only the outermost zones of andalusite and staurolite porphyroblasts, whereas the lath-shaped domains are abundant in their interiors.
		A chloritoid pseudomorph, aligned NW-SE, is partly overgrown by staurolite and andalusite.
	www.earth.ox.ac.uk /~davewa/research/kinetics/kin_wl02.html (1182 words)

	Some pseudomorph localities in Wyoming Rocks & Minerals - Find Articles (Site not responding. Last check: 2007-10-11)
		Pseudomorphs are altered minerals that retain their original crystal forms even though replaced by another mineral species through chemical or physical action.
		By assuming that the specimens are combinations of calcite and aragonite, we find that the measurements are consistent with pseudomorphs that are 80 percent calcite and 20 percent aragonite by volume.
		Fahey concluded that the pseudomorphs were derived when rainwater penetrating the near-surface layers leached out the sodium carbonate from the original shortite, leaving behind calcium carbonate.
	www.findarticles.com /p/articles/mi_m0GDX/is_5_80/ai_n15388897 (809 words)

	Pseudomorphs
		Pseudomorphs are very interesting specimens, each by itself telling an interesting story with one mineral appearing in the habit of another.
		Bismutite pseudomorph after Bismuthinite is a bismuth oxy-carbonate after a bismuth sulfide, the bismuth stays and the Bismutite forms by oxidation of the Bismuthinite - that is not conceptually too difficult.
		Pseudomorphs are mostly stable in a normal household environment, depending on the mineral replacing the original.
	www.hedegaard.com /Minerals/Groups/Pseudomorphs.html (836 words)

	[No title]
		Patchwork aggregate pseudomorph of hydrothermal biotite, quartz, and opaque mineral after a magmatic ferromagnesian mineral.
		Pseudomorph of hydrothermal biotite after a phenocryst of hornblende in hornblende porphyry.
		Pseudomorphs of hydrothermal biotite after ferromagnesian minerals in a sample of texturally destroyed rock.
	www.fortunecity.co.uk /safaripark/lamprey/108/fig034.htm (319 words)

	Pseudomorphs: The False Form Minerals
		Pseudomorphs are minerals that have been chemically altered in some way and are new minerals which can have a new crystalline structure, but they still retain the shape of the original mineral.
		When aragonite pseudomorphs into calcite it is similar to the beta-quartz and alpha-quartz in that the chemical composition is the same, but the internal crystalline structure is different.
		The striations seen in the pyrite picture to the left would be visible on a pseudomorphic goethite due to the fact that pseudomorphs keep the same outward appearance as the initial mineral.
	www.emporia.edu /earthsci/amber/go336/holt (820 words)

	Fine Minerals - Arkenstone
		This is a solid specimen composed of bayldonite pseudomorphs after mimetite on a matrix of bayldonite, anglesite, etc. It is a world-class Tsumeb specimen of surpassing display quality for such a rarity and is one of the top such specimens known to exist (whether in museums or out).
		Moreover, it was in the famed pseudomorph collection of Edward Swoboda, recognized to be the best such collection ever assembled in the US at least.
		Like so many pseudomorphs in the collection, this is regarded as one of the finest examples of the replacement by many who have seen it in person.
	www.tsumebfineminerals.com /sussman12a.html (1518 words)

	IngentaConnect Achtarandite - sponge hibschite pseudomorph after wadalite-like p... (Site not responding. Last check: 2007-10-11)
		Achtarandite, tetrahedral pseudomorph after a wadalite-like mineral, is represented by different types of pseudomorphs on the Wiluy deposit.
		As a result of processes and mechanisms of pseudomorphic substitution of wadalite (protoachtarandite) by hydrogarnet are white, predominantly hibschite pseudomorphs.
		Sponge structure of pseudomorphs was forced by the substitution mechanisms (mechanisms of the simultaneous growth and dissolution) at the conditions of volume deficit of new-formed phase.
	www.ingentaconnect.com /content/schweiz/njma/2002/00000178/00000001/art00003 (205 words)

	NSMGS: Pseudomorphs (Site not responding. Last check: 2007-10-11)
		At the March 2001 meeting the topic was pseudomorphs and Ronnie Van Dommelen gave the club a short lecture, along with pictures and samples, about these tricky minerals.
		The term pseudomorph means 'false form' and is used to describe crystals in which an original mineral has been replaced by a second mineral while retaining the outwardly crystal form of the original mineral.
		The final pseudomorph process is when the starting mineral and the final mineral have nothing in common.
	www.accesswave.ca /~nsmgs/activities/pseudomorphs.html (400 words)

	Catoctin Furnace Fibers - pseudomorph information (Site not responding. Last check: 2007-10-11)
		Over time, the fragile textiles will degrade, and disappear, but the corrosion is left behind, holding the textile's shape.
		Metal buttons are a good place to look for pseudomorphic textiles.
		Copper pins were used to hold shrouds in place, and this one from Feature 18 had two different manifestations of pseudomorphs on its surface.
	www.jefpat.org /christy/cdg_fiber2.html (261 words)

	Pseudomorph calcite and hematite
		A Pseudomorph is produced when one or more minerals replaces another mineral while retaining its crystal shape.
		This is one of the most magnificent calcites I have ever had the pleasure of encountering.
		It is my experience that pseudomorphic pieces bring the lesson of how to grow with the situations in our life and in doing so take the best from every aspect of our life.
	www.metastones.com /calcite_and_hematite.htm (416 words)

	Barite after paralstonite, a new pseudomorph from Cave-in Rock, Illinois Mineralogical Record - Find Articles (Site not responding. Last check: 2007-10-11)
		A new type of pseudomorph occurs as white hexagonal crystals to 2 mm in length associated with brown calcite from a new find on the Bethel level of the Minerva No. 1 mine near Cave-in-Rock, Hardin County, Illinois.
		They are replacement pseudomorphs of barite after paralstonite which formed late in the mineral paragenesis.
		Associated with the calcites are 1 to 2-mm white crystals, the morphology of which strongly resembles that of alstonite and paralstonite (Figs.
	www.findarticles.com /p/articles/mi_qa3672/is_199711/ai_n8764303 (843 words)

	Pseudomorphic Coyomito Agate
		A pseudomorph is something that takes the form of something else.
		Pseudomorphs in agate are quite rare but do occur in nodular agates from various locations, usually as a calcite or aragonite replacement.
		First crystals grow in the gas cavity left in the volcanic andesite rock (these crystals are believed to be aragonite in the case of the Coyamito Agate).
	www.thegemshop.com /coya-pseudo.htm (427 words)

	January 2005
		Pseudomorphs are an interesting and important mineral collecting subdivision to which several MSSC members have made important contribution.
		Pseudomorphs by substitution: Those that formed by the replacement of a mineral which has been removed or is gradually undergoing removal, e.g., petrifaction of wood.
		Pseudomorphs by paramorphism: Those formed when a mineral passes from one [dimorphous] state to another e.g., change of aragonite to calcite or [beta quartz to alpha quartz].
	www.mineralsocal.org /bulletin/2005/2005_jan.htm (6100 words)

	News \| Gainesville.com \| The Gainesville Sun \| Gainesville, Fla. (Site not responding. Last check: 2007-10-11)
		An infiltration pseudomorph is a pseudomorph in which one mineral or other material is replaced by another.
		A variety of infiltration or substitution pseudomorphism is called alteration, in which only partial replacement occurs.
		The resulting pseudomorph may contain an unaltered core of galena surrounded by anglesite that has the cubic crystal shape of galena.
	www.gainesville.com /apps/pbcs.dll/section?category=NEWS&template=wiki&text=pseudomorph (377 words)

	Glendonite specimens from Great South Gems and Minerals online catalog
		Pseudomorphed from Ikaite, an unstable calcium carbonate that forms only under very specific conditions: very cold (almost freezing) water, organic-rich sediments that are highly alkaline, reducing and have a high hydrostatic pressure.
		There are few localities in the world that have (or have had) the correct conditions for the formation of Ikaite and the after-ikaite pseudomorph, Glendonite.
		Some of the specimens have a grey sandstone matrix that is naturally eroded into a smooth ball shape that the glendonite crystals appear to grow from.
	www.greatsouth.net /minerals/p-M693.html (157 words)

	Pseudomorph - Slider
		This occurs, as an example, in the aragonite to calcite change.
		An infiltration pseudomorph is a pseudomorph in which one mineral is replaced by another.
		An incrustation pseudomorph results from a process by which a mineral is coated by another and the encased mineral dissolves.
	enc.slider.com /Enc/Incrustation_pseudomorph (125 words)

	Marcasite Ring Direct Manufacturer
		A pseudomorph is an atom by atom replacement of one mineral's chemistry for another.
		The effect is one mineral in the shape of another, hence the term pseudomorph (Latin for false shape).
		Sometimes as a replacement mineral of fossils and a pseudomorph of pyrite.
	www.eurostarjewelry.com /marcasite_ring/marcasite_ring.htm (461 words)

	META-AUTUNITE (Hydrated Calcium Uranyl Phosphate)
		A pseudomorph is generally an atom by atom replacement of one mineral's chemistry in place of another mineral's chemistry, while the original crystal's outward shape remains largely unchanged.
		Pseudomorph translated from latin means false shape (pseudo=false; morph=shape).
		In this case, the conversion is not so dramatic since it involves only the loss of a few water molecules; therefore, a good pseudomorph is likely.
	mineral.galleries.com /minerals/phosphat/meta-aut/meta-aut.htm (494 words)

	New Page 0
		We are aware that some of you out there must be specializing in the unusual mineral replacements called pseudomorphs.
		There is another metallic minerals and small groups of a cram colored mineral, as well, which could be muscovite.
		Small light yellow grossulars to several millimeters each on dark brown (pseudomorphed?) wollastonite crystals to 3 cm each.
	www.geologicdesires.com /specimensforsalepseudomorphspage1.htm (1223 words)

	Cephalopod Pseudomorph Function
		One way is to use the ink to create a pseudomorph (false form).
		To make a pseudomorph the ink is mixed with mucous apparently from the funnel organ.
		While no experimental evidence has demonstrated the function of the pseudomorph, any diver that has been confused by this behavior will have little doubt as to its function.
	www.tolweb.org /accessory/Cephalopod_Pseudomorph_Function?acc_id=1964 (307 words)

	PSEUDOMORPH
		A term used to indicate a body which is the product of substitution of organic or mineral material by other substances with conservation of primary form.
		English words defined with "PSEUDOMORPH": Gieseckite ♦ Martite ♦ Paramorph.
		All intellectual property rights in and to the game are owned in the U.S.A and Canada by Hasbro Inc., and throughout the rest of the world by J.W. Spear & Sons Limited of Maidenhead, Berkshire, England, a subsidiary of Mattel Inc. Mattel and Spear are not affiliated with Hasbro.
	www.websters-online-dictionary.org /definition/english/Ps/Pseudomorph.html (306 words)

	New Page 0
		All show well formed brookite crystals, pseudomorphed by rutile, many with highly developed growth hillocks on ½ or more of the crystal faces.
		OKC-029 Rutile Pseudomorph of Brookite on Albite after Quartz Pseudomorph Magnet Cove, Arkansas.
		OKC-031 Rutile Pseudomorph of Brookite on Albite after Quartz Pseudomorph Magnet Cove, Arkansas.
	www.geologicdesires.com /mineralsforsalebrookitesfromarkansas.htm (349 words)

	Pseudomorph (Site not responding. Last check: 2007-10-11)
		Pseudomorph is a substitution process wherin the aesthetic appearance and dimensions of a mineral compound remains constant.
		However, the mineral which makes up the chief component of the compound is replaced by another.
		Help build the largest human-edited directory on the web.
	www.serebella.com /encyclopedia/article-Pseudomorph.html (87 words)

	Turkish Agate Images Page
		Image 1 - Pseudomorph agate found near Cubuk, north of Ankara, Turkey.
		Image 2 - Pseudomorph agate found near Cubuk, north of Ankara, Turkey.
		Image 4 - Pseudomorph or "spray" agate found near Cubuk, north of Ankara, Turkey.
	www.agates.freeservers.com /photo6.html (173 words)

	Glossary of Geological, Mineralogical, Mining and Radiological Terms
		A fully metamict crystal of a mineral may be thought of as being a pseudomorph of itself, showing its macroscopic crystal form without being crystaline.
		It may be thought of as being two domes that are perpendicular to each other, and truncating each other's long axis.
		Two examples of this are of Thorogummite pseudomorph after Thorite.
	www.uraniumminerals.com /Notes/Glossary.htm (9918 words)

	High quality pseudomorphs (false form) mineral specimens available for sale to mineral collectors.
		Pseudomorphs are mineral specimens where a mineral has taken the form of a previously deposited mineral.
		Sometimes a mold is made of the first mineral by a second mineral growing over it, then the original dissolves, then a third mineral fills the void, and finally the second mineral dissolves.
		Common pseudomorphs include: Copper pseudomorph after Azurite, Descloizite pseudomorph after Cerussite, Malachite pseudomorph after Azurite, Malachite pseudomorph after Cuprite, Prehnite pseudomorph after Laumontite, Pyrolusite pseudomorph after Manganite, Stibiconite pseudomorph after Stibnite, Strontianite pseudomorph after Celetite.
	www.johnbetts-fineminerals.com /jhbnyc/pseudo.htm (379 words)

	Definition of Pseudomorph
		1: In [[geology]], a '''pseudomorph''' is a [[mineral]] compound resulting from a sub...
		7: An '''infiltration pseudomorph''' is a pseudomorph in which one mineral is replaced by another.
		9: An '''incrustation pseudomorph''' results from a process by which a mineral is c...
	www.wordiq.com /search/Pseudomorph.html (174 words)

	DLESE description of Image Archives: Pseudomorph Pictures
		Pseudomorph literally means false form and is used in mineralogy to indicate that a mineral has the outward appearance of a different mineral.
		Pseudomorph photographs at this site include filling pseudomorphs, replacement pseudomorphs, and encrustation pseudomorphs.
		Some examples shown include quartz pseudomorph after aragonite, copper pseudomorph after aragonite, and encrustation of chalcedony over aragonite crystals.
	www.dlese.org /library/catalog_DLESE-000-000-006-622.htm (129 words)

	Arizona TNs 3
		I can't decide if the non-malachite cuprites just have an odd look because of partial dissolution while in fluid, or if these have actually been pseudomorphed by native copper.
		In either case this is a classic Bisbee specimen, and the cuprite to malachite pseudomorphs (that are a bit larger than the norm) just scream "Copper Queen Mine"!
		This one features some bright red vanadinite crystals that were also covered with quartz, giving the specimen a great shot of color.
	www.kcminerals.com /arizona3.htm (348 words)

	Untitled Document
		A pseudomorph is the result when one mineral chemically replaces another mineral without changing the external form of the original mineral.
		There are three types of pseudomorphs: paramorphs, infiltration pseudomorphs, and encrustation pseudomorphs.
		Limonite has been known to pseudomorph other minerals such as pyrite, meaning it replaces a crystal of pyrite with limonite but keeps the shape of the pyrite crystal.
	www.treasuremountainmining.com /web105limp1.htm (352 words)

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