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Browsing ELibrary by Title
Now showing items 9600-9619 of 26297
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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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(2006)Stalactites formed by the chemical weathering of natrocarbonatite lava decorate the roofs of hollow inactive hornitos at Oldoinyo Lengai, Tanzania. The stalactites are composed principally of trona with lesser and very ...
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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 ...
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(1988)The mineralogy and genesis of the tetravalent manganese oxides present in the Groote Eylandt ore are discussed on the basis of recent mineralogical concepts. Their mechanisms of formation on Groote Eylandt are described ...
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(1989)Whole-rock (major- and trace-element) and mineral chemical data are presented for basaltic rocks from the main evolutionary stages of the Kurile island arc, NW Pacific. An outer, inactive arc contains a Cretaceous-Lower ...
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(2003)The Late Paleozoic Kairagach epithermal gold deposit belongs to the high-sulfidation (acid-sulfate) type. It is located at the northern slope of the Kuramin Ridge in the central Tien Shan, 3.5 km northwest of the Kochbulak ...
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(2006)Petrological, geochemical, and Nd isotopic analyses have been carried out on rock samples from the Rainbow vent field to assess the evolution of the hydrothermal system. The Rainbow vent field is an ultramafic-hosted ...
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(2006)Granitic intrusions in Eocene and post-Eocene volcanic rocks outcrop in the Northern and Southern Zones of the Eastern Pontides, NE Turkey. Intrusions in the Northern Zone extend NW-SE whereas those in the Southern Zone ...
Now showing items 9600-9619 of 26297