Results 251 to 260 of about 139,284 (308)

Magnetic birefringence of minerals

Journal of Colloid and Interface Science, 2005
The earliest reports of magnetically induced optical birefringence included data for liquids, magnetic fluids and colloidal suspensions. Recent work has shown that with relatively straightforward apparatus, when carefully designed and aligned, measurable effects can be recorded even for suspensions of relatively weak diamagnetic materials, including ...
Barry R, Jennings, Stephen R, Wilson, Peter J, Ridler   +2 more
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Extraterrestrial magnetic minerals

Izvestiya, Physics of the Solid Earth, 2012
Thermomagnetic and microprobe analyses are carried out and a set of magnetic characteristics are measured for 25 meteorites and 3 tektites from the collections of the Vernadsky Geological Museum of the Russian Academy of Sciences and Museum of Natural History of the North-East Interdisciplinary Science Research Institute, Far Eastern Branch of the ...
D. M. Pechersky, G. P. Markov, V. A. Tsel’movich, Z. V. Sharonova   +3 more
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Natural magnetic minerals

1986
Iron, the pre-eminent seat of magnetism in natural minerals (Section 2.2.4), is the fourth most abundant element in the Earth’s crust. Consequently it is an important constituent of the majority of rocks found at the Earth’s surface. Along with the commonest crustal metal, aluminium, it combines with the two most plentiful crustal elements, oxygen and ...
Roy Thompson, Frank Oldfield
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Magnetization and Magnetic Minerals

2014
This is the first of four chapters devoted to the techniques for collecting and analysing kinematic data. The fundamental source of data for determining past plate motions is furnished by rock magnetization. In this chapter, I describe the different classes of rock magnetism, the main magnetic minerals, and the origin of ferromagnetism.
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Magnetic seeding flocculation of weakly magnetic iron minerals

International Journal of Mineral Processing, 1992
Abstract Magnetic seeding flocculation (MSF) has been proven as a successful pretreatment for High Gradient Magnetic Separation (HGMS) of weakly magnetic, finely-sized oxidized iron minerals such as specularite, limonite, and siderite. The utilization of an anionic polymer with an optimal molecular weight and degree of hydrolysis, sodium silicate ...
Q.Y. Song, F. Xu, S.C. Tsai
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Magnetic Transitions in Minerals

Reviews in Mineralogy and Geochemistry, 2000
Magnetic minerals have fascinated man since they were first used as compasses by the Chinese over 4000 years ago. Their scientific study has given rise to the interrelated disciplines of mineral magnetism, rock magnetism, and paleomagnetism, which have contributed to some of the most important scientific discoveries of the last century and continue to ...
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Rock magnetism and magnetic minerals

1983
Rock magnetism is the term commonly applied to the study of the magnetic properties of rocks and minerals, how these properties depend on factors such as grain size and shape, temperature and pressure, and the origin and characteristics of the different types of remanent magnetizations which rocks and magnetic minerals can acquire.
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Magnetic Properties of Minerals

1994
All materials respond in some way to a magnetic field so that all minerals have magnetic properties. Minerals which contain no ions with uncompensated spins (e.g., an absence of, notably, the transition series elements) are diamagnetic. Those containing transition elements in low concentrations are paramagnetic.
W. O’Reilly, V. I. Trukhin, F. Heller, H. C. Soffel, D. J. Dunlop, St. E. Haggerty, P. A. Cheremnykh   +6 more
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Magnetic minerals and fluvial processes

1986
This chapter is concerned with particles in transit once they have reached a defined water course. Prior to the period of movement within a river channel, the particles will have been either released from the land surface and delivered to the channel by rainsplash, sheet erosion, rill and gully erosion or mass movement, or else removed from the channel
Roy Thompson, Frank Oldfield
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