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Browsing ELibrary by Title
Now showing items 11594-11613 of 22924
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(1990)Analysis of the collective data suggest that the spheroidal or spherical form of native selenium is an indicator of the operation of hydrothermal processes in the formation of complex ores in hydrogenous uranium deposits. ...
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(2006)We carried out a systematic study of spinel group minerals in LL3.00-3.9 and LL4-6 chondrites. With increasing petrologic type, the size and abundance of spinel increase. The compositions of spinel group minerals in type ...
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(1997)Spinel peridotite xenoliths from the Atsagin-Dush volcanic centre, SE Mongolia range from fertile lherzolites to clinopyroxene(cpx)-bearing harzburgites. The cpx-poor peridotites typically contain interstitial fine-grained ...
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(1986)For mantle peridotite xenoliths from the Tariat Depression in central Mongolia an origin as partial melt residues has been inferred from the systematic change of bulk chemical compositions with mineral chemistries and modal ...
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(2002)Large discrepancies are reported for the near-solidus, pressure-temperature location of the spinel to garnet lherzolite univariant curve in the system CaO-MgO-Al2O3-SiO2 (CMAS). Experimental data obtained previously from ...
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(2004)Grossular (Grs99Adr01) crystals were synthesized in hydrothermal experiments by the reaction wollastonite + calcite + anorthite = grossular + CO2 (400 MPa; 695-750 °C; XCO2 = 0.1; solid:fluid = 2:1) using natural minerals ...
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(2006)With the increasing adoption of the surface mining of coal, problems associated with spoil pile instability, which affects resource recovery, mining cost, and safety and presents environmental hazards, have become a matter ...
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(1988)An important property of a deformable solid is that it can store energy, as, for example, in the form of the potential energy of bulk deformation; this energy can be applied from without by a mechanical or thermal agency, ...
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(1987)Hydrated iron sulfates identified as melanterite, rozenite, szomolnokite and halotrichite have been observed growing on iron sulfides in polished and rough-cut surfaces of samples of Ohio and Utah coals stored under normal ...
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(2002)The dielectric permittivity was measured in the frequency range from 5 to 13 MHz for artificial, laboratory-made solid samples of gypsum with different water contents. The measurements were made on distilled water and three ...
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(2000)The state of dehydroxylation was studied after heating a homoionic and cv montmorillonite at various temperatures for different times. Spontaneous rehydroxylation occurred under ambient conditions at a relative humidity ...
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SPONTANEOUS STRAIN VARIATIONS THROUGH THE LOW TEMPERATURE PHASE TRANSITIONS OF DEUTERATED LAWSONITE (2003)High resolution neutron powder diffraction has been used to determine lattice parameter variations of deuterated lawsonite across the Cmcm ↔ Pmcn and Pmcn ↔ P21cn phase transitions, in the temperature interval 1.6–505 K. ...
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(2004)The developed concept of spontaneous structure formation and classification of structures formed on DME (digital matrix of events) objects is described. The suggested method (alternative to traditional structure-formation ...
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(2002)Ten spore-and-pollen assemblages and nine phytoplankton assemblages (dinocysts, green algae, acritarchs) are distinguished in upper Sarmatian-lower Kimmerian deposits of the reference section situated in the Zheleznyi Rog ...
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(2004)The exine ultrastructures of pollen extracted from sporangia of Loricanthus resinifer and Baisianthus ramosus from the Early Cretaceous Baisa locality (eastern Transbaikalia) were examined. The pollen are small, with a ...
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(2004)The MDSW represents a powerful and the most significant factor responsible for ventilation (consequently, formation and variability) of the intermediate water mass of the North Pacific. The main purpose of this work is a ...
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(2004)The water mass spreading observed in the study region suggests the following conclusions. First, the Kruzenshtern Strait represents a stable source of the NPW for the Sea of Okhotsk and only small SOW quantities can enter ...
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(2004)Spriggite, Pb3[(UO2)6O8(OH 2](H2O)3, is a new hydrated Pb uranyl oxyhydroxide found near Arkaroola, Northern Flinders Ranges, South Australia. The new mineral's name honors geologist and conservationist Reginald Claude ...
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(2002)The use of geophysics in shallow investigations, such as in environmental, geotechnical and hydrogeological studies requires the development of fast, reliable, high-resolution field and interpretation techniques.When ...
Now showing items 11594-11613 of 22924