Browsing ELibrary by Title
- DSpace Home
- →
- Геология России
- →
- ELibrary
- →
- Browsing ELibrary by Title
JavaScript is disabled for your browser. Some features of this site may not work without it.
Browsing ELibrary by Title
Now showing items 2675-2694 of 21934
-
(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 ...
-
(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 ...
-
(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 ...
-
(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 ...
-
(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 ...
-
(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. ...
-
(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 ...
-
(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 ...
-
(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 ...
-
(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 ...
-
(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 ...
-
(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 ...
-
(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 ...
-
(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 ...
-
(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 ...
-
(2001)Six kaolinite [A12Si2O5(OH)4] samples were synthesized under different conditions of temperature, pressure, and pH from two different starting materials. Chemical composition and properties of the samples were characterized ...
-
(1988)Crystal size distributions (CSDs) measured in metamorphic rocks yield quantitative information about crystal nucleation and growth rates, growth times, and the degree of overstepping (T) of reactions during metamorphism. ...
-
(2002)This study demonstrates the value of the combined use of scaling analysis and crystal size distribution (CSD) measurements in the interpretation of igneous textures and outlines applications of these methods to other ...
-
(2003)Crystal size distributions (CSDs) of quartz and zircon phenocrysts in individual pumice clasts from several voluminous ash-flow tuffs provide a quenched snapshot view of con-ditions in preclimactic magma chambers. A common ...
Now showing items 2675-2694 of 21934