peridotite
peridotite A coarse-grained,
ultrabasic,
igneous rock consisting of
essential magnesium-rich
olivine accompanied by lesser amounts of other
ferromagnesian minerals, e.g.
orthopyroxene (
enstatite-
bronzite),
clinopyroxene (chromium-
diopside), and
chromite, with or without
pyrope garnet. Peridotites are found in large, layered,
ultrabasic,
intrusive bodies, in
ophiolite complexes, and as
xenoliths brought up in
alkali basalts and
kimberlites. As well as forming by
crystal fractionation processes in igneous bodies, their mineral chemistry and presence as xenoliths in kimberlites suggest that much of the Earth's
mantle, and therefore of the mass of the Earth, is peridotite.
Meteorites are also composed largely of peridotite, suggesting that peridotites are probably the commonest rock in the
solar system.
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CENTRIFUGES GET BIGGER AND BETTER.
Magazine article from: Chemical Engineering; 6/1/2001; ; 700+ words
; ...want to see two centrifuges go to four. So...capability of a centrifuge." Emphasizing...Avanti J line of centrifuges and shaped to conform...labware spun in the centrifuge rotor, the plastic...modifications in centrifuges. Rousselet-Robaters...Slab 420 basket centrifuge sports ...
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Centrifuges at heart of nuclear programs in North Korea and Iraq may spread to more hands in future
News Wire article from: AP Worldstream; 10/24/2002; 700+ words
; ...of uranium gas centrifuges lies in their compactness. A centrifuge plant for a small...look for signs of centrifuge rebuilding on...helped Brazil build centrifuges to produce fuel...reportedly plans _ for centrifuge technology. Pakistan...
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Centrifuge Systems Launches Ground-Breaking Information Visualization Product.
PR Newswire; 5/13/2008; 700+ words
; - Centrifuge Server Takes Business Intelligence to...MCLEAN, Va., May 13 /PRNewswire/ -- Centrifuge Systems, Inc., a leading provider...breaking new visualization product, Centrifuge Server. Centrifuge Server is a highly...
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The centrifuge connection: after Iran's first story of how it acquired uranium enrichment technology was rejected, evidence of a more complex procurement network began to emerge.
Magazine article from: Bulletin of the Atomic Scientists; 3/1/2004; ; 700+ words
; ...corrosive gas used in centrifuges. Although Iran encountered...making and operating centrifuges, postponing by many...construction of a pilot centrifuge plant, it appears...used in Iran's gas-centrifuge manufacturing complex...knowledgeable about centrifuges when they sold the...
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Centrifuge Modeling of Cadmium Migration in Saturated and Unsaturated Soils
Magazine article from: Soil & Sediment Contamination; 1/1/2005; ; 700+ words
; ...come to recognize that geotechnical centrifuge can provide a powerful experimental...pollutant transport behavior in most centrifuge modeling. To overcome the shortcomings of this approach, centrifuge tests for the study of one-dimensional...
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Which centrifuge? A guide to selecting centrifuge technology
Magazine article from: Pharmaceutical Technology Europe; 10/1/2000; ; 700+ words
; ...material, whether centrifuges should be used...batch. Filter or centrifuge? When sourcing...specialty chemicals. Centrifuges are generally divided...Sedimentation centrifuges Solid-bowl decanter centrifuge a continuous sedimenting...
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Peeler centrifuges for pharmaceutical manufacturing.(Application Area)
Magazine article from: Pharmaceutical Processing; 9/1/2003; ; 700+ words
; ...Bottom discharge centrifuges, on the other...inside and the centrifuge is purged with...vibration of the centrifuge. The peeler...Like vertical centrifuges, horizontal...quantities. Centrifuge Control Systems Centrifuges have become...
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Clarifying Centrifuge Operation and Selection
Magazine article from: Chemical Engineering Progress; 8/1/2004; ; 700+ words
; ...on whether the centrifuge runs on a continuous...basis. Decanting centrifuges effect a separation...continuously fed to the centrifuge as the products...mechanically. Continuous centrifuges The solid-bowl decanter centrifuge (Figure 2) is...
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Effect of centrifuge radius on hydraulic conductivity measured in a falling-head test.(NOTE)
Magazine article from: Canadian Geotechnical Journal; 1/1/2007; ; 700+ words
; ...a falling-head test conducted in a centrifuge is derived that takes into account linearly...test conducted using a small radius centrifuge, the assumption of constant centrifugal...the curvature of the water table in a centrifuge model could also result in slight overestimation...
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Examine the World Laboratory Centrifuges Markets.
News Wire article from: Canadian Corporate News; 5/6/2008; 700+ words
; ...Components of a Centrifuge II-9 Common Features...Encountered With Centrifuges II-10 Types of...Refrigerated Tabletop Centrifuges II-11 A Review...General-Purpose Centrifuge Models II-12 Floor Centrifuges II-13 Micro Centrifuges...
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Centrifuge
Encyclopedia entry from: The Gale Encyclopedia of Science
...Applications of the rotating centrifuge The basic centrifuge design described...settings. Industrial centrifuges, for example, tend...a hundred years. Centrifuges are also used to...from waste water. A centrifuge for use with very...
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centrifuge
Book article from: The Columbia Encyclopedia, Sixth Edition
...liquid and a solid. The centrifuge consists of a fixed base...Another common type of centrifuge called the cream separator...separation. The first successful centrifuge was built in 1883 by Carl...including proteins and viruses. Centrifuges are also used for such diverse...
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New Medical Machinery
Book article from: American Decades
...ultracentrifige. The ultracentrifuge was a fast centrifuge, a machine used to separate colloid...increased gravitational field of a highspeed centrifuge. Svedberg originally tried to develop an "optical centrifuge" which would photograph the sedimentation...
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Iranian Nuclear Programs
Encyclopedia entry from: Encyclopedia of Espionage, Intelligence, and Security
...Isfahan. There were also allegations of centrifuge facility construction near Tehran...indicated the assembly of more than 150 centrifuges near the Natanz facility nearing operational...a gaseous form of uranium used in centrifuges. Western intelligence scientists and...
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Svedberg, Theodor
Book article from: Chemistry: Foundations and Applications
...invention of the ultracentrifuge. This centrifuge is similar in principle to a regular laboratory centrifuge except that it rotates at very high...varying distances from the center of the centrifuge according to particle size. These bands...
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