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Topic: Periclase

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	Synthetic Periclase
		Magnesia (MgO) = periclase has high melting point and it is highly resistant for ablation by basic slag or molten metals, and because of these features, periclase powder has been used as a fireproof brick for long period.
		A single crystal of periclase became in use as an optical material, a host material of solid-state laser or a substrate for ferroelectric thin film.
		Synthetic periclase for jewellery has a long history and its literature goes back as old as 1969, in which the material had been sold by the name “Lavernite” in the States at the time.
	www.gaaj-zenhokyo.co.jp /researchroom/kanbetu/2004/kan_2004_08en.html (464 words)

	PERICLASE (Magnesium Oxide)
		Periclase is sometimes used as a gemstone although it lacks good hardness and is generally limited in colors.
		Periclase is isostructural with halite, NaCl, which has simple cubic packing and produces cubic and octahedral crystals.
		Specimens of periclase can be very attractive as brightly lustered, smoothly faceted crystals projecting out of the otherwise formless rough marble host rock.
	mineral.galleries.com /minerals/oxides/periclas/periclas.htm (200 words)

	Origin of supposedly biogenic magnetite in the Martian meteorite Allan Hills 84001 -- Barber and Scott 99 (10): 6556 -- ...
		Periclase clearly formed by precipitation from carbonate as a
		Periclase, unlike magnetite, which forms in a variety of igneous, metamorphic, and sedimentary rock types, is relatively uncommon
		Magnetite and periclase are often associated with voids and microfractures in carbonate (Fig.
	www.pnas.org /cgi/content/full/99/10/6556 (3487 words)

	Magnesite - Wikipedia, the free encyclopedia
		Magnesite can also be formed from metasomatism in skarn deposits, in dolomitic limestones, associated with wollastonite, periclase, and talc.
		Magnesite can be used as a slag former in steelmaking furnaces, in conjunction with lime, in order to protect the magnesium oxide lining.
		Such periclase is an important produc in refractory materials.
	en.wikipedia.org /wiki/Magnesite (327 words)

	Center for Environmental Kinetics Analysis
		Stereo movie files generated from a molecular dynamics simulation of periclase (MgO) crystallization by Lee and Kubicki (1993).
		Model spans 10 ps (10 x 10-12 seconds!) of real time and shows the phase transition between a supercooled liquid and crystal at 2500K.
		Lee, W.J. and J.D. Kubicki, Molecular Dynamics Simulation of Periclase Crystallization, Geophysical Research Letters, Vol.
	www.ceka.psu.edu /geowall/visualizations/index.htm (246 words)

	Mineralogical Evidence for Fluid-Rock Interaction Accompanying Prograde Contact Metamorphism of Siliceous Dolomites: ...
		at least the initial retrograde cooling of the periclase zone.
		O marble layers within the periclase zone indicates that
		was considerably lower in these zones than in the periclase
	petrology.oxfordjournals.org /cgi/content/abstract/41/6/739 (551 words)

	Periclase Mineral Data
		Comments: Black grains of srebrodolskite with white periclase.
		Hazen R M, American Mineralogist, 61 (1976) p.266-271, Effects of temperature and pressure on the cell dimension and X-ray temperature, factors of periclase, T = 24 C, P = 1 atm, standard mount
		IV/A.04 - Periclase Group, Periclase - Murdochite series
	webmineral.com /data/Periclase.shtml (215 words)

	rietveld_l-1997: Re: RIR - periclase as standard (Site not responding. Last check: 2007-10-10)
		Be wary that MgO (periclase) does hydrate in air to form MgOH2 (brucite)
		The more finely divided it is, the faster the hydration would occur.
		Nice, facetted single crystals of Periclase tend to go a cloudy colour
	sdpd.univ-lemans.fr /DU-SDPD/rietveld_l/1997/00000175.htm (200 words)

	Periclase Structures
		The periclase group is composed of the mon-oxide minerals of magnesium (periclase), iron (wustite), calcium (lime), manganese (manganosite) and nickel (bunsenite).
		The crystal structure is that of halite (rocksalt) and is composed of two interpenetrating FCC lattices of cation and oxygen.
		Periclase Wustite Lime Bunsenite Manganosite MgO FeO CaO NiO MnO
	ruby.colorado.edu /~smyth/min/periclase.html (70 words)

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