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Browsing Геология России by Title
Now showing items 3405-3424 of 39126
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(2001)Two new uranyl molybdate hydrates, occur as transparent yellow needles and yellow elongate plates for M = Cs and NH4, respectively. Their structures were solved by direct methods and refined on the basis of F2 for all ...
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(2002)Two alkali uranyl dimolybdates, Na-2[(UO2)(MoO4)(2)] and K-2[(UO2)(MoO4)(2)](H2O), have been synthesized by high-temperature solid-state reactions and hydrothermal methods, respectively. The structures of both compounds ...
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(2002)Two Cs uranyl molybdates, Cs4((UO2)3O(MoO4)2(MoO5)) and Cs6((UO2)(MoO4)4), have been synthesized by high- temperature solid-state reactions. The structures of these compounds were solved by direct methods and refined on ...
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(2002)A new uranyl molybdate hydrate, [(UO2)Mo2O7(H2O)(2)], has been synthesized by hydrothermal methods. The crystals are dark yellow elongate plates that are invariably twinned on (100). The structure was solved by direct ...
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(2003)Crystals of four sodium uranyl molybdates, Na3Tl3[(UO2)(MoO44] (1), Na13-xTl3+x[(UO2 (MoO4)3]4(H2O)6+x (x=0.1) (2), Na3Tl5[(UO2 (MoO4)3]2(H2O)3 (3 and Na2[(UO2)(MoO42](H2O)4 (4), have been synthesized by hydrothermal ...
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(2003)Crystals of a new silver uranyl molybdate, Ag-10[(UO2)(8)O-8(Mo5O20)] have been synthesized by high-temperature solid-state reaction. The structure [monoclinic, C2/c, a 24.672(2), b 23.401(2), c 6.7932(4) Angstrom, beta ...
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(2003)Crystals of a new thallium uranyl molybdate, Tl-2[(UO2)(2)O(MoO5)], have been synthesized by high-temperature solid-state reactions. The structure [monoclinic, P2(1)/n, a 8.2527(3), b 28.5081(12), c 9.1555(4)Angstrom, beta ...
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(2001)Two Na uranyl molybdates, K6[(UO2)2O(MoO4)4], have been synthesized by high-temperature solid-state reactions of mixtures of Na2CO3, K2CO3, UO3 and MoO3. All three structures were solved by direct methods and refined on ...
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(2003)Compositional and structural characteristics of ore minerals were studied in detail using a combination of physical and chemical methods with wide application of modern equipment and sophisticated programs for data processing. ...
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(2002)The analysis of the preferred orientation of crystals (crystal fabric) in magmatic rocks has become a widely used technique for the reconstruction of the flow history. However, little is known about the evolution of the ...
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(2000)Feldspars and normative feldspar constituents of bulk magma show trends supportive of fractional crystallization in the three main types of <rm>hy</rm>-normative intraplate suites that contain <rm>qz</rm>-oversaturated ...
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(2002)The Oshurkovo Complex is a plutonic sheeted complex which represents numerous successive magmatic injections into an expanding system of subparallel and subvertical fractures. It comprises a wide range of rock types including ...
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(2004)Schoepite. [(UO2)(8)O-2(OH)(12)](H2O)(12), precipitates through interaction of acidic and basic uranyl solutions with calcite. The uranyl solutions have (UO2)(2+) concentrations between 1.5 and 50 mmol L-1, and initial pH ...
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(1990)x-Andalusite is a widely occurring phase, generated at high water temperatures and vapor pressures in the system Al2O3-SiO2-H2O. However, the structure of its lattice is not easy to decipher because the crystals are very ...
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(IOP Publishing, 2015)The investigated crystal morphology and thermal EMF of pyrites in the western flank of Sukholozsky ore field showed that the pyrite crystals have cubic habitus with a weakly-developed face {210}. The crystal faces {100} ...
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(1987)The authors analyzed diamonds from rutile-sphene eclogite bodies whose garnet is not pyrope, but andradite, and which lack omphacite pyroxene. These eclogite bodies occur within local ring structures, revealed by remote ...
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(2004)Feldspar nucleation rate data obtained by laboratory decompression of hydrous silicate melt are interpreted in view of the classical theory of nucleation (CNT) and a non-classical variation, the diffuse-interface theory ...
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(2002)Synchrotron excited X-ray photoelectron spectra (SXPS) of hexagonal pyrrhotite reveal three distinct Fe 3d-derived photopeaks within its outer valence band. The t2gα band (majority spin) is centered at about 2.5 eV, the ...
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(2000)We show that 206Pb/238U ratios measured in baddeleyite by ion microprobe vary significantly (up to +/-10% or more) and systematically with the relative orientation of the baddeleyite crystal structure and the primary ion ...
Now showing items 3405-3424 of 39126