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Browsing ELibrary by Title
Now showing items 7228-7247 of 21638
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(2003)The carbonate-rich lithology of the Tagish Lake carbonaceous chondrite was characterized by noble-gas mass spectrometry, synchrotron X-ray diffraction analysis, and transmission and scanning electron microscopy. Noble-gas ...
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(1999)Spontaneous burning in the largest spoil heaps of the Chelyabinsk coal basin led to high-temperature conditions (1000-1300°C). At these parameters, Fe-rich basic liquids resulted from the complete melting of a fine-crushed ...
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(2002)Petrographic and mineralogic studies of amoeboid olivine inclusions (AOIs) in CO3 carbonaceous chondrites reveal that they are sensitive indicators of parent-body aqueous and thermal alteration. As the petrologic subtype ...
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(2000)This study of minerals from the Late Cretaceous potassic volcanic rocks of the Kirganik Suite from the Sredinnyi Range of Central Kamchatka provided a basis for affiliating these rocks with two series: (1) a plagioclase ...
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(2002)The late Eocene Popigai impact structure of Siberia comprises an approximately 0.5–1.5 km thick, ˜100 km diameter sequence of clast-rich and clast-poor andesitic to rhyolitic impact melt rocks and impact breccias, underlain ...
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(2002)The carbonate biominerals formed in the oogonial cells and on stems of charophytes reveal intra-specific and species-to-species variations within the genus Chara. Calcite, high-magnesian calcite (HMC) and aragonite may be ...
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(2001)We characterized the most As-rich natural hydr ous ferric oxide (HFO) material ever reported using powder X-ray diffraction (pXRD), transmission electron microscopy (TEM), X-ray fluores- cence spectroscopy (XRF), light ...
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(1995)The Krymka chondrite contains an exotic graphite-bearing fragment that appears to be of a new type of material added to unequilibrated LL-chondrite during agglomeration on the surface of the parent body. The fine-granular ...
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(1987)Mineralogical and crystallographic data and electron microprobe analyses of silicate minerals for Antarctic ureilites Y74123, Y74130, Y74659, Y790981, ALHA77257, ALHA78019 and ALH82106 extend the chemical and textural ...
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(2003)Seventy-one carbonaceous chondritic microclasts of average size 150 μm have been found in three howardites (Yamato-793497, Jodzie, Kapoeta). All carbonaceous chondritic microclasts are made of a fine-grained phyllosilicate-rich ...
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(1998)Cumulus olivine, clinopyroxene, melilite and perovskite from silicate rocks and carbonatites of the Gardiner (East Greenland) and Kovdor (Kola Peninsula) ultramafic alkaline complexes contain primary melt inclusions ...
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(2004)The paper contains results of a comprehensive study of the mineralogy and physical properties of diamonds, including results of IR and UV spectroscopy, EPR spectroscopy, x-ray luminescence, carbon isotopic composition, and ...
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(2000)The mineralogy of fine-grained rims in ALH 81002, a relatively primitive CM carbonaceous chondrite, has been determined by using transmission electron microscopy. The most abundant phase is Mg-rich serpentine, which occurs ...
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(2000)Abundant mantle xenoliths found in Pliocene basanites from the Dzhilinda River are divided into three groups. These are: (1) coarse-grained protogranular spinel and garnet spinel Iherzolites (two-pyroxene temperature T = ...
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(1991)During the last few years nearly 50 minerals and unnamed platinum-group element (PGE) phases have been identified by the authors in nickel-bearing mafic-ultramafic massifs of the Kola region. About 20 established PGE ...
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(2002)Four phyllosilicate-rich micrometeorites (MMs) were investigated by a synchrotron radiation X-ray diffraction technique and transmission electron microscopy. Three are saponite-rich MMs and one is a serpentine-rich one. ...
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(1998)Pyrometamorphic rocks generated during spontaneous burning of spoil-heaps in the Chelyabinsk coal basin, South Urals, contain a variety of high-temperature minerals, some with diverse and unusual compositons. Optical ...
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(2003)We studied the mineralogy, mineral chemistry, and compositions of 48 interior silicate inclusions and a large K-rich surface inclusion from the Colomera IIE iron meteorite. Common minerals in the interior silicate inclusions ...
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(2001)Experimental multi-anvil study of the phase relations in subducted oceanic crust (mid-ocean ridge basalt (MORB)) composition over a pressure range from 25 to 37 GPa, equivalent to depths of 700-950 km in the lower mantle, ...
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(2002)In this paper we describe the recovery, handling and preliminary mineralogical investigation of the Tagish Lake meteorite. Tagish Lake is a type 2 carbonaceous chondrite which bears similarities to CI1 and CM chondrite ...
Now showing items 7228-7247 of 21638