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Reading the second edition of Moore and Reynolds°OX-ray Dif-
fraction and the Identification and Analysis of Clay Minerals
is an absolute delight. It is rare to come away from reading a
scientific ...
Surface chemical characterization and surface diffraction effects of real margarite (001): An angle-resolved XPS investigation
surface of natural pure margarite angle-resolved XPS investigation real margarite (001)
2012/3/31
The (001) surface of natural pure margarite was chemically characterized by angle-resolved X-
ray photoelectron spectroscopy (ARXPS). The extreme surface sensitivity of ARXPS permits con-
cluding th...
Chemical Changes and Genesis of Secondary Minerals during the Alteration of Biotites from Ignimbrites in the Tazzeka Mountain (Morocco)
Alteration Biotite Chlorite Ignimbrite Illite Structural Formula
2011/12/6
Abstract: The Tazzeka Mountain, located approximately 20 km south of Taza, eastern Morocco, is composed of a Westphalian volcano-sedimentary complex. It contains rhyolitic ignimbrites with the followi...
XAFS determination of the chemical form of lead in smelter-contaminated soils and mine tailings: Importance of adsorption processes
smelter-contaminated soils mine tailings adsorption processes oxyhydr
2012/3/31
Weinvestigatedsmelter-contaminatedsoilsfromEvin-Malmaison,Nord-Pas-de-Calais,
France,andminetailingsfromLeadville,Colorado,U.S.A.BulkPbconcentrationsrange
from460to1900ppminthetopsoilsatEvin-Malmais...
Chemical Variations in Chlorite at the Los Humeros Geothermal System, Mexico
Chlorite Geothermal System Hydrothermal Mexico Octahedral Occupancy Phyllosilicate
2011/12/8
Abstract: The chemical composition of hydrothermal chlorite was determined by means of more than 200 electron microprobe analyses (EMPA) in almost all of the 70 chlorite-bearing samples taken from 5 b...
Physico-Chemical Characterization and Catalytic Properties of Copper-Doped Alumina-Pillared Montmorillonites
Alumina Copper Copper Catalyst Montmorillonite Phenol Hydroxylation Pillared Clay
2011/12/2
Abstract: Cu-doped alumina-pillared montmorillonite samples have been prepared and characterized with X-ray diffraction (XRD), Brunauer-Emmett-Teller (BET), electron spin resonance (ESR) and inductive...
Characterization of mixed-layer illite-smectite from bentonites using microscopic, chemical and X-ray methods: Constraints on the smectite-to-illite transformation mechanism
Characterization mixed-layer illite-smectite microscopic X-ray methods smectite-to-illite transformation mechanism
2012/3/31
We studied mixed-layer illite-smectite (I/S) (,1 or 0.5 mm size fractions) in 28 diage-netic bentonite samples, Pliocene to Ordovician in age, from different locations in North America and Europe to i...
Inclusive chemical characterization of tourmaline: Mossbauer study of Fe valence and site occupancy
Inclusive chemical characterization Mossbauer Fe site occupancy
2012/4/1
We report here the results of a series of inclusive chemical characterizations, including all elements except oxygen, for a suite of 54 tourmaline samples. A combination of analytical techniques was u...
Chemical microstructure of Franciscan jadeite from Pacheco Pass, California
Chemical microstructure Franciscan jadeite
2012/3/31
The chemical microstructure of five jadeitic pyroxenes from three Franciscan quartzose metagraywacke samples was investigated by backscattered electron imagery, element map-ping, and electron micropro...
The chemical composition of REE-Y-Th-U-rich accessory minerals in peraluminous granites of the Erzgebirge-Fichtelgebirge region, Germany, Part I: The monazite-(Ce)-brabantite solid solution series
chemical composition REE-Y-Th-U-rich accessory minerals peraluminous granites Erzgebirge-Fichtelgebirge region monazite-(Ce)-brabantite solid solution series
2012/3/31
eraluminous granites of the Erzgebirge-Fichtelgebirge, Germany, are hosts of various members of the monazite group of minerals that display an unprecedented compositional diversity. The Eibenstock S-t...
Cordylite-(Ce): A crystal chemical investigation of material from four localities, including type material
Cordylite-(Ce) crystal chemical investigation material type material
2012/3/31
Six cordylites from the four known localities [Narssarssuk (Greenland), Mont St. Hilaire(Canada), Bayan Obo (China), and Kola Peninsula (Russia)] were investigated by electron microprobe and X-ray sin...
Structure of synthetic monoclinic Na-rich birnessite and hexagonal birnessite: II. Results from chemical studies and EXAFS spectroscopy
synthetic monoclinic Na-rich birnessite hexagonal birnessite II. Results chemical studies EXAFS spectroscopy
2012/4/6
SolutionchemicaltechniqueswereusedtostudytheconversionofsyntheticNa-richbuserite(NaBu)tohexagonal(H-exchanged)birnessite(HBi)atlowpH.Thelow-pH
reactionisbroadlycharacterizedbytheexchangeofstructuralN...
Comparison of the Mineralogical and Chemical Composition of 2 Shales from the Western Canada Sedimentary Basin and the United States Gulf Coast
Deposition Diagenesis Geochemistry Mineralogy Mixed-Layer Illite/Smectite Oxygen Isotopes
2011/12/9
Abstract: The mineralogy and geochemistry of shales reflect the composition of the initially deposited precursor mud, subsequently modified by diagenetic processes. To see if significant geochemical d...
Clarkeitecrystallizesduringmetasomaticreplacementofpegmatiticuraninitebylate-stage,oxidizinghydrothermal?uids.Samplesarezonedcompositionally:Clarkeite,which
isNarich,surroundsaK-richcore(commonlywith...
Refined Relationships between Chemical Composition of Dioctahedral Fine-Grained Micaceous Minerals and Their Infrared Spectra within the OH Stretching Region. Part II: The Main Factors Affecting OH Vibrations and Quantitative Analysis
Cation Mass Cation Valency IR Spectra OH Stretching Frequencies Quantitative Analysis
2011/12/9
Abstract: A new model for the interpretation of dioctahedral mica infrared (IR) spectra in the OH stretching vibration region is proposed. It is based on the analysis of the main factors responsible f...