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Mineralogical and Geochemical Characteristics of Geophagic Clayey Soils in Africa and their Possible Impact on Human Health
Mineralogical Geochemical Characteristics Geophagic Clayey Soils Africa Possible Impact Human Health
2012/3/14
Mineralogical and Geochemical Characteristics of Geophagic Clayey Soils in Africa and their Possible Impact on Human Health.
Chemical/Geochemical Characterization of Clays and Clay Minerals in Share Area, Bida Sedimentary Basin,Nigeria
Chemical Geochemical Characterization Clays Clay Minerals Share Area Bida Sedimentary Basin
2012/3/14
Chemical/Geochemical Characterization of Clays and Clay Minerals in Share Area, Bida Sedimentary Basin,Nigeria.
Sedimentological, Geochemical and Economic Appraisal of Maastrichtian Clays in Bida Basin, Central Nigeria
Sedimentological Geochemical Economic Appraisal Maastrichtian Clays Bida Basin
2012/3/14
Sedimentological, Geochemical and Economic Appraisal of Maastrichtian Clays in Bida Basin, Central Nigeria.
Geochemical controls on uranium precipitation in calcrete palaeochannel deposits of Namibia
uranium hydrogeochemistry geochemical modelling Namibia
2011/11/10
Palaeo-river channels containing calcrete are important potential hosts for economic uranium mineralization in many parts of southern Africa particularly Namibia. The main feature of these deposits ar...
Geochemical controls on uranium precipitation in calcrete palaeochannel deposits of Namibia
uranium hydrogeochemistry geochemical modelling Namibia
2011/11/7
Palaeo-river channels containing calcrete are important potential hosts for economic uranium mineralization in many parts of southern Africa particularly Namibia. The main feature of these deposits ar...
Palygorskite in Miocene rocks of northern Iraq:environmental and geochemical indicators
Palygorskite Authigenesis Miocene Iraq
2011/11/4
the mineralogical characteristics of palygorskite from the Lower Miocene Euphrates Formation and the Middle Miocene Fat’ha (Lower Fars) succession in north and northwestern Iraq were studied by X-ray ...
Geochemical alteration of pyrochlore group minerals: Betafite subgroup
pyrochlore group minerals Betafite subgroup
2012/4/6
Relatively low-temperature, secondary alteration is common in samples of metamict betafite and initially proceeds bythe substitution mechanisms ANaYF--+ADYD,ACaYO--+ADYD,and ACaXO--+ADXD.Alteration is...
Magma transport and metasomatism in the mantle: A critical review of current geochemical models---Reply to Navon et al.
Magma transport metasomatism mantle:current geochemical models
2012/4/6
Navon et al. (1996) demonstrated that the Navon and Stolper (1987) model can be formulated to reproduce a pattern oflight-ion lithophile trace element (LIL) enrichments produced by a single, small-sca...
Magma transport and metasomatism in the mantle: A critical review of current geochemical models---Discussion
Magma transport metasomatism mantle critical review current geochemical models---Discussion
2012/4/6
Nielson and Wilshire (1993) promised a review of geochemically based models for magma transport and metasomatism in the mantle. However, they focused ondiscrediting the chromatographic modelofNavon an...
Origin of the Bentonite Deposits of Eastern Milos, Aegean, Greece: Geological, Mineralogical and Geochemical Evidence
Authigenic K-feldspar Bentonite Electron microscopy Hydrothermal alteration Infrared spectroscopy Low temperature alteration Smectite X-ray diffraction X-ray fluorescence Zeolites
2011/12/1
Abstract: The Lower Pleistocene bentonite deposits of Eastern Milos, Greece have been formed at the expense of volcaniclastic rocks under submarine conditions. Systematic variation of the major chemic...
X-RAY MINERALOGY AND GEOCHEMICAL STUDIES OF SEDIMENTS, LEG 125 SITES 781 THROUGH 784 AND 786
X-RAY MINERALOGY GEOCHEMICAL STUDIES OF SEDIMENTS
2011/11/14
The mineral composition of clay (<2 μm)- and silt (<63 μm)-fractions from sediments sampled at Sites 781 through 784 and 786 from the Mariana and Izu-Bonin forearcs (ODP Leg 125), were investigated by...
Mineralogy from Geochemical Well Logging
Elemental analysis Illite Kaolinite Mineralogical analysis Multivariate analysis Neutron capture cross section Well logging
2012/1/11
Multivariate statistical analyses of geochemical, mineralogical, and cation-exchange capacity (CEC) data from a Venezuelan oil well were used to construct a model which relates elemental concentration...
Geochemical Mechanics for the Dissolution, Transport, and Deposition of Aluminum in the Zone of Weathering
Geochemical Mechanics Dissolution Aluminum
2012/2/15
Organic acids in the 0·01M concentration range representing amino-, aliphatic, and aromatic types present in humus dissolve 70–85 ppm Al from Arkansas bauxite at room temperature, whereas 0·03 ppm is ...
Mineralogical and Geochemical Study of Clay Mineral Transformations in the Sedimentary Triassic Jura Basin (France)
Mineralogical Geochemical Study Clay Mineral Transformations Sedimentary Triassic Jura Basin
2012/2/21
A detailed study of sediments from the Triassic of the French Jura shows that clay minerals vary continuously with the facies. Near the coasts of the Jura Sea, sediments consisted of sandy, continenta...