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Frio Shale Mineralogy and the Stoichiometry of the Smectite-to-Illite Reaction: The Most Important Reaction in Clastic Sedimentary Diagenesis
Diagenesis Illite-Smectite Mass Balance Mineralogy Shale
2011/12/22
Abstract: Burial diagenesis of shales of the Frio Formation resulted in an increase in the abundance of mixed-layer illite-smectite (I-S), albite and chlorite, and a decrease in the abundance of K-fel...
Geochemistry and Mineralogy of a Modern Buserite Deposit from a Hot Spring in Hokkaido, Japan
Buserite DTA Hot spring Ion-exchange equilibrium Manganese deposit Phyllomanganate REE SEM Todorokite Volcano XRD Yuno-Taki Falls
2011/12/1
Abstract: The hot spring water discharging from a flank of an active volcano is precipitating unique monomineralic manganese deposits over volcanic terrain. The major and trace element chemistry, XRD ...
Mechanism of Illitization of Bentonites in the Geothermal Field of Milos Island Greece: Evidence Based on Mineralogy, Chemistry, Particle Thickness and Morphology
Bentonite Hydrothermal alteration Illitization Illite/smectite Kaolinite Neoformation Ostwald ripening Solid state transformation
2011/12/28
Hydrothermal alteration has caused illitization along a 40m vertical profile in the Tsantilis bentonite deposit, Eastern Milos, Greece which consists principally of a Wyoming-type montmorillonite and ...
Mineralogy of Rhizospheric and Non-Rhizospheric Soils in Corn Fields
Corn Mineralogy Non-rhizosphere Rhizosphere
2011/12/29
Technical limitations have restricted investigations of rhizosphere mineralogy. Various analytical techniques were applied to assess root-mineral associations and dynamics in natural soils under corn ...
Clay Mineralogy and Illite Crystallinity of the Atoka Formation, Arkoma Basin, and Frontal Ouachita Mountains
Anchimetamorphism Diagenesis Illite Illite crystallinity Polytype Provenance Vitrinite reflectance X-ray powder diffraction
2011/12/30
Clay mineralogy (including illite crystallinity) was studied in Pennsylvanian synorogenic sediments (Atoka Formation) in the subsurface of the Arkoma Basin and the adjacent Ouachita thrust belt. Vitri...
Origin, Diagenesis, and Mineralogy of Chlorite Minerals in Devonian Lacustrine Mudrocks, Orcadian Basin, Scotland
Chlorite Corrensite Diagenesis Dolomite Vitrinite Reflectance
2011/12/29
Chlorite and corrensite are common clay minerals in lacustrine mudrocks from the Devonian Orcadian Basin, Scotland. The relationship of their occurrence to vitrinite reflectance data demonstrate that ...
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...
Influence of Climate on the Iron Oxide Mineralogy of Terra Rossa
Goethite Hematite Pedoclimate Terra rossa XRD
2011/11/30
Abstract: Terra rossa samples were taken from the B horizons of soil profiles and from cracks within limestone in Italy. The average annual temperature (AAT) of the sites ranged from 8.4 to 20.3°C and...
REGIONAL CORRELATION OF MINERALOGY AND DIAGENESIS OF SEDIMENT FROM THE EXMOUTH PLATEAU AND ARGO BASIN, NORTHWESTERN AUSTRALIAN CONTINENTAL MARGIN
mineral associations juvenile-to-mature evolution Palygorskite
2011/11/8
Correlation of mineral associations from sediment recovered on the northwestern Australian continental margin document the juvenile-to-mature evolution of a segment of the Indian Ocean. Lower Cretaceo...
Mineralogy and Genesis of Clays in Postmagmatic Alteration Zones, Makurazaki Volcanic Area, Kagoshima Prefecture, Japan
Makurazaki volcanic area Alteration aureoles Mode of occurrence Mineralogical properties Sudoite Tosudite Rectorite
2012/1/4
Two distinct zonal sequences of clay minerals (H- and L-type) were found around silicified rocks in the Makurazaki volcanic area, Kagoshima Prefecture, Japan. The clay mineral sequences from the inner...
Clay Mineralogy, Alteration History, and Economic Geology of the Whitemud Formation, Southern Saskatchewan, Canada
Abrasion Brightness Eastend Formation Frenchman Formation Kaolin Kaolinite Paleosol Whitemud Formation
2012/1/4
The Upper Cretaceous (Maastrichtian) Whitemud Formation is a potentially commercial kaolin deposit located in southern Saskatchewan and southeastern Alberta. The Whitemud Formation contains a lower ka...
CLAY MINERALOGY OF NEOGENE SEDIMENTS OF THE WESTERN ARABIAN SEA:MINERAL ABUNDANCES AND PALEOENVIRONMENTAL IMPLICATIONS
CLAY MINERALOGY THE WESTERN ARABIAN SEA
2011/11/7
Clay mineral relative abundances in approximately 450 samples from cores recovered during ODP Leg 117 in the Arabian Sea have been used to examine the paleoclimatic, paleoenvironmental, and tectonic h...
Mineralogy, Chemistry, and Diagenesis of Tuffs in the Sucker Creek Formation (Miocene), Eastern Oregon
Clinoptilolite Diagenesis Opal-CT Smectite Tuff Zeolites
2012/1/5
The lacustrine Sucker Creek Formation (Miocene) of eastern Oregon includes unaltered vitric tufts as well as tufts altered to the following diagenetic facies: (1) bentonite, (2) interbedded bentonite ...
Mineralogy, Geochemistry, and Origin of the Underclays of the Central Coal Basin, Asturias, Spain
Chlorite Diagenesis Illite Illite/smectite Paragonite Pyrophyllite Underclay
2012/1/4
Samples of underclays corresponding to nine different coal beds of the María Luisa coal seam in the Aller valley (Asturias, Spain) were collected to determine whether their mineralogy and geochemistry...
Weathering of Iron-Bearing Minerals in Soils and Saprolite on the North Carolina Blue Ridge Front: II. Clay Mineralogy
Chlorite Goethite Hematite Iron Kaolinite Mossbauer spectroscopy Saprolite Soils Vermiculite Weathering
2011/11/30
Abstract: The mineralogy of the clay fraction was studied for soils and saprolite on two Blue Ridge Front mountain slopes. The clay fraction contained the weathering products of primary minerals in th...