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Topic: Diaspore

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	diaspore.htm (Site not responding. Last check: 2007-10-07)
		Diaspore also is a common component of bauxite, aluminous soils and clays.
		BARRON COUNTY: Dott and Dalziel (1972) report diaspore as a component of pipestone in the Blue Hills area where it is intergrown with kaolin, illite and quartz.
		SAUK COUNTY: diaspore is a component of the metasaprolite and in veins at the base of the Baraboo Quartzite.
	www.uwrf.edu /~wc01/diaspore.htm (80 words)

	Probert Encyclopaedia: Rocks and Minerals (D) (Site not responding. Last check: 2007-10-07)
		Diaspore is a mineral similar to boehite, but harder and heavier, and more suitable for use as a gemstone.
		Diaspore is typically colourless, but occurs in brown, green, grey, pink, light red, dark red, purple, white and yellow colours depending upon the impurities in the sample.
		Diaspore was confirmed as a distinct mineral in 1801.
	www.probertencyclopaedia.com /H4.HTM (862 words)

	Diaspore
		On the terminology of diaspores =: Beitrag zur terminologie der diasporologie
		Thermal dissociation of diaspore clay, (Missouri School of Mines and Metallurgy, a division of the University of Missouri.
		Thermochemical properties of gibbsite, bayerite, boehmite, diaspore, and the aluminate ion between 0 and 350°C
	www.veryhappening.com /things/diaspore (172 words)

	DIASPORE - LoveToKnow Article on DIASPORE (Site not responding. Last check: 2007-10-07)
		It may be readily distinguished from other colorless transparent minerals, with a perfect cleavage and pearly lustremica, talc, brucite, gypsumby its greater hardness of 63/47.
		When heated before the blowpipe it decrepitates violently, breaking up into white pearly scales; it was because of this property that the mineral was named diaspore by R. Hauy in 1801, from andao~rei pew, to scatter.
		If obtainable in large quantity it would be of economic importance as a source of alumina.
	www.1911encyclopedia.org /D/DI/DIASPORE.htm (193 words)

	Cryolite - Wikipedia, the free encyclopedia (Site not responding. Last check: 2007-10-07)
		Mostly considered a one locality mineral, for although there are a few other minor localities, it was only found in large quantities on the west coast of Greenland.
		It was used as a solvent of the aluminium rich ore, bauxite, which is a combination of aluminium oxides such as gibbsite, boehmite and diaspore.
		It is very difficult to remove atoms of aluminium from atoms of oxygen which is necessary in order to produce aluminium metal.
	www.sevenhills.us /project/wikipedia/index.php/Cryolite (256 words)

	Diaspore EventsDisclaimer
		Diaspore Events does not warrant that functions contained on this site will be uninterrupted or error-free, that defects will be corrected, or that this site or the server are free of viruses or other harmful components.
		Diaspore Events does not warrant or represent the use of the materials on this site in terms of their correctness, accuracy, reliability, or otherwise.
		Diaspore Events makes no representation or warranty regarding the standing, credit or otherwise of any person, firm or company mentioned in the information, nor the suitability of the information for any purpose.
	snsvo1.seekandsource.com /diaspore/disclaimer.html (233 words)

	diaspore home page (Site not responding. Last check: 2007-10-07)
		A diaspore is a unit of dispersal in living things.
		Some diaspores provide fleshy material as food for animals, who in return disperse the seeds contained within.
		The ants carry diaspores to their nests, underground and away from rodents and grassland fires, depositing them in finely sifted soils enriched with ant compost.
	members.aol.com /diaspore/seeds (190 words)

	MSN Encarta - Search Results - diaspore
		Diaspore, mineral, aluminum oxide AlO(OH), intermediate in composition between bauxite and corundum.
		Alumina Al, an oxide found in nature as the minerals corundum, Al ; diaspore, Al O; gibbsite, Al O; and most commonly, bauxite, an...
		Exclusively for MSN Encarta Premium Subscribers--quickly search thousands of articles from magazines such as Time, Newsweek, The Atlantic Monthly, and Smithsonian.
	ca.encarta.msn.com /diaspore.html (75 words)

	Publikationen Thomas Theye (Site not responding. Last check: 2007-10-07)
		The upper pressure limit of pyrophyllite is given by the equilibria (i) pyrophyllite = diaspore + quartz, and (ii) pyrophyllite = diaspore + coesite.
		The upper stability of diaspore + quartz is limited by the reaction diaspore + quartz = kyanite + H
		We conclude that, in metamorphic rocks, diaspore + quartz is, as ferrocarpholite, an indicator for unusual low-T/very high-P settings.
	www.uni-stuttgart.de /imi/mitarb/theye/tt-ab971.htm (289 words)

	LookSmart - Search results for "Diaspore" (Site not responding. Last check: 2007-10-07)
		Access an image of diaspore, and data such as the mineral classification, crystallography, optical data, formula, and the chemical and physical properties.
		Diaspore [Categories: Oxide minerals] For the plant structure, see (A small usually single-celled reproductive body produced by many plants and some protozoans and that develops into a new individual...
		These rare and wonderful Diaspore crystals are from Turkey, they exhibit pleochroism: the X-axis displays a dark red brown color and the Z-axis displays a...
	www.looksmart.com /r_search?look=&key=Diaspore (420 words)

	diaspore
		Diaspore is a hydrated Aluminium Oxide with the Chemical formula, AlO(OH) Location.
		Diaspore clays are found in Missouri and Pennsylvania.
		Some deposits are found to have an aluminous advanced argillic alteration zone (figure 2) in which kaolinite, sericite, prophyllite and andalusite with minor corundum, topaz and diaspore is found.
	www.uk20.co.uk /search.php?q=diaspore (479 words)

	Royal Botanic Gardens, Kew: Data and Publications: Seed Information Database
		Diaspore size (l x w x t): The size of the diaspore is measured in length (l) x width (w) x thickness (t).
		Length refers to the dimension from the point of attachment to the plant to the tip of the diaspore (or the opposite end), width and thickness are two lateral dimensions which may or may not be identical, e.g.
		in a compressed diaspore the larger lateral diameter is referred to as width and the smaller one as thickness.
	www.rbgkew.org.uk /data/sid (4337 words)

	diaspore
		Diaspore having a chemical formula Al is beta monohydrate aluminum.
		Therefore is no BIS specification prescribed for diaspore.
		The sub-Committee on refractory raw materials of the DGTD in their report August 1985 has stipulated the following two grades of diaspore for utilization refractory industry.
	uk.geocities.com /psranawat/diaspore.html (83 words)

	Bauxite Geology (Site not responding. Last check: 2007-10-07)
		The three structural forms of bauxite are Gibbsite, Böhmite and Diaspore.
		Gibbsite is a true aluminium hydroxide and Böhmite and Diaspore are both aluminium-oxide-hydroxides.
		The main difference between the latter two is that Diaspore has a different crystalline structure to Böhmite, and requires even higher temperatures for rapid dehydration.
	www.world-aluminium.org /production/mining/geology.html (460 words)

	adaptation/skittles
		Maples have seeds (diaspores actually, if you want to use the correct term) that are samaras, which "helicopter down" as they fall from the seed parent tree.
		But no matter which approach you use and regardless of your design's success (your brilliantly designed diaspore may in fact drop like a stone), the way in which your diaspore morphology came to be is different from the way real diaspore evolution takes place, and this difference can be summed up in one word: teleology.
		The differences among "this generation's diaspore morphology" are filtered, presumably with trees that have poorly dispersing diaspores (higher terminal velocity) having lower reproductive success relative to trees that disperse seeds more distantly (lower terminal velocity), and if this trait is inherited, the next generation's diaspores will have on average a lower terminal velocity.
	www.miracosta.cc.ca.us /home/jihara/majors02/labs/202lab01.html (2113 words)

	DIASPORE-[ruv.net : Online Encyclopedia Britannica : 1911 Edition]- (Site not responding. Last check: 2007-10-07)
		DIASPORE, a native aluminium hydroxide, AlO(OH), crystallizing in the orthorhombic system and isomorphous with gthite and manganite.
		It occurs sometimes as flattened crystals, but usually as lamellar or scaly masses, the flattened surface being a direction of perfect cleavage on which the lustre is markedly pearly in character.
		When heated before the blowpipe it decrepitates violently, breaking up into white pearly scales; it was because of this property that the mineral was named diaspore by R. Hauy in 1801, from &ao~rei pew, to scatter.
	britannica.ruv.net /D/DI/DIASPORE.htm (217 words)

	CSIRO PUBLISHING - Australian Journal of Botany (Site not responding. Last check: 2007-10-07)
		Correlates of diaspore size were investigated by using phylogenetically independent contrasts to assess which ecological factors may have influenced the evolution of different dispersal mechanisms.
		Results indicate that diaspore size strongly influences the size to which a seedling can grow in its first few months, which in turn influences the plant's ability to survive summer drought.
		Larger seedlings, produced by larger diaspores, are less likely to succumb to drought-induced mortality than the smaller seedlings produced by smaller diaspores.
	www.publish.csiro.au /nid/65/paper/BT01089.htm (264 words)

	Avalon Crystals Gallery Page D, danburite, dioptase, diaspore, dumortierite, and diopside.
		These rare and wonderful Diaspore crystals are from Turkey, they exhibit pleochroism: the X-axis displays a dark red brown color and the Z-axis displays a faint yellow-green color.
		Energetically Diaspore is a 7th chakra stone, by carrying this crystal with you, it is easier to 'read' people and to understand what they are communicating to you.
		By meditating with Diaspore one may visit a desert in which a community of healers exist, there you will learn a great deal about the ancient art of healing through crystals.
	www.neatstuff.net /avalon/a-to-f/crystal-d.html (414 words)

	Diaspore, Gemstones, Colored Gems, Semi Precious Gems, Gem Cutting, Faceting
		Diaspore, light greenish-yellow, 1.51ct., long emerald, VSI to EC, ~4.5x14, Turkey.
		Has a strong cleavage, but should be fine in a pendant or earrings.
		Diaspore, light greenish-yellow, 1.99ct., cut corner triangle, VSI, ~7.5x12, Turkey.
	www.buenavistagemworks.com /gemstones/gempages/diaspore.htm (332 words)

	Search Results for diaspore - Encyclopædia Britannica
		The dispersing agents for seeds and fruits are indicated in such terms as anemochory, hydrochory, and zoochory, which mean dispersal by wind, water, and animals, respectively.
		In the modern world, wind dispersal (although numerically important) reflects the climatic and biotic poverty of certain regions; it is essentially a feature of pioneer vegetations.
		Diaspore dormancy has at least three functions: (1) immediate germination must be prevented even when circumstances are optimal so as to avoid exposure of the seedling to an unfavourable period...
	www.britannica.com /search?query=diaspore&submit=Find&source=MWTEXT (317 words)

	American Journal of Botany, 74, 8, August, 1987 (Site not responding. Last check: 2007-10-07)
		Differences in fall rates among plumed species were dependent on interspecific variation in diaspore weight and plume area, while fall rates of winged species were strongly differentiated by contrasting wing shapes.
		In both of these species, rate of descent of altered diaspores was controlled by weight relative to wing or plume area.
		Compared with wide variation in diaspore weight, members of the Compositae showed relatively low variation in plume loading (diaspore weight/plume area) and fall speed.
	www.botany.org /ajb/00029122_di001874.html (3290 words)

	ClassicGems.net
		Diaspore is a very rare gem with gem quality crystals coming mainly from bauxite deposits at Mamaris, Yagatan, Mugla Province, Turkey.
		It is hard enough for use in jewelry, but is little known in the jewelry trade.
		The name Diaspore is from the Greek word diaspeirein, meaning to scatter, because the mineral falls apart easily under the flame of a blowpipe.
	www.classicgems.net /gem_diaspore.htm (94 words)

	IngentaConnect Diaspore ecology of Mertensia maritima: effects of physical treat... (Site not responding. Last check: 2007-10-07)
		Diaspore ecology of Mertensia maritima: effects of physical treatments and their relative timing on dispersal and germination
		This paper reports an experimental study of water dispersal potential and germination of the shingle beach plant Mertensia maritima in which we consider the effects of physical factors (cold treatment, mechanical wear of the pericarp and salt-water exposure) on the diaspores.
		Future studies in diaspore ecology should consider such timing effects as they may be important determinants of the distribution and abundance of plants.
	www.ingentaconnect.com /content/mksg/oki/2001/00000095/00000003/art00002 (293 words)

	Electron microscopic study of the dehydration of diaspore -- Loeffler and Mader 86 (3): 293 -- American Mineralogist
		The thermal transformation of natural, single-crystal diaspore (D) to corundum (C) and water has been analyzed in detail by means of transmission electron microscopy (TEM).
		Pieces of single-crystal diaspore were partially dehydrated at temperatures ranging from 400 to 600 degrees C and were prepared in cross-section for TEM studies.
		The transformation of diaspore was studied at the faces (100)
	ammin.geoscienceworld.org /cgi/content/abstract/86/3/293 (304 words)

	All About Diaspore \| Miss Peridot's Encyclopedia of Gems, Diamonds and Jewelry (Site not responding. Last check: 2007-10-07)
		Diaspore color change facet grade 32.5 carats #td12
		Diaspore color change facet grade 25.5 carats #td5
		Diaspore color change facet grade 56 carats #td7
	www.missperidot.com /012/term.asp?tid=207 (341 words)

	Environmental Dynamics and Simulation - Thermodynamics and Kinetics of Cation Exchange in Micas: Development of ... (Site not responding. Last check: 2007-10-07)
		Using the mineral diaspore, we evaluated the ability of local-density (LDA) and generalized gradient (GGA) DFT methods to mimic the compressibility of an anisotropic structure as a function of pressure up to 25 GPa (Figure 2.7).
		Calculated structures, bulk moduli, and anisotropic compressibilities for diaspore using the GGA DFT method demonstrated better agreement with experiment.
		The test implies that GGA DFT is sufficiently accurate to describe changes in the total energy of a mineral phase as a function of subtle structural changes.
	www.emsl.pnl.gov /docs/eds/annual_report1999/1627b-2f.html (805 words)

	All That Glitters: Gemstone Pictures - Diaspore
		This was photographed under diffused office fluorescent light with a fiber optic light source to the left.
		The color change is very subtle, going from a yellow green to, well, we are really not quite sure - perhaps a champagne color - it is very difficult to see exactly what the color is because we are in the dark using two different light sources.
		For someone who wants a Diaspore that is clean, decent size, well, cut and at a good price, this will fit the bill, as they say.
	www.atggems.homestead.com /files/Gemstone_Pics_Diaspore.htm (1738 words)

	Mineral Specimen for sale of Diaspore from Chester Emery Mines, Hampton County, Massachusetts. (Site not responding. Last check: 2007-10-07)
		Diaspore from Chester Emery Mines, Hampton County, Massachusetts.
		This mineral specimen of Diaspore from Chester Emery Mines, Hampton County, Massachusetts is available for sale from John Betts - Fine Minerals, mineral dealer located in New York City, New York.
		The diaspore is glassy and translucent with excellent color, though it is hard to photograph and must be seen to be appreciated.
	www.johnbetts-fineminerals.com /jhbnyc/gifs/31668.htm (182 words)

	PlantNET - FloraOnline (Site not responding. Last check: 2007-10-07)
		Dispersal, establishment and growth Diaspore: fruit, both vertebrate and ant-adapted dispersal (Westoby et al 1990).
		Dispersal, establishment and growth Diaspore: fruit, both vertebrate (probably bird) and ant-adapted dispersal (Westoby et al 1990).
		Dispersal, establishment and growth Diaspore: fruit, adaptation for dispersal by ingestion (McIntyre et al.
	plantnet.rbgsyd.gov.au /cgi-bin/NSWflora.pl (5896 words)

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