搜索结果: 1-15 共查到“矿床学与矿相学 Mexico”相关记录25条 . 查询时间(0.077 秒)
Radium depletion and 210Pb/226Ra disequilibrium of Marítaro hydrothermal deposits, Los Azufres geothermal field, Mexico
hydrothermal deposits 210Pb 226Ra radium adsorption Los Azufres
2017/4/11
In order to calculate the chronology of hydrothermal deposits precipitated from hot springs at Marítaro, Los Azufres
geothermal field, Mexico, their 224Ra, 226Ra, 228Ra and 210Pb activities were meas...
Micromorphology investigation of sepiolite bearing petrocalcic horizons formed from lacustrine sediments on the southern high planes of Texas and New Mexico
micromorphology investigation petrocalcic horizons lacustrine sediments
2011/11/8
The presence of sepiolite in soils has long been thought to have been attributed to inheritance from alternative parent material via secondary (eolian, alluvial) depositional processes due to sepiolit...
Relationship between nanostructure and optical absorption in fibrous pink opals from Mexico and Peru
opal optical absorption nanostructure Raman palygorskite TEM
2011/11/11
Translucent pink opals from Mexico (states of Mapimi and Michoacan) and Peru (Acari area, near Arequipa) are opal-
CT, containing from 10 to 40 % palygorskite, as demonstrated by XRD, infrared absorp...
Detrital Origin of a Sedimentary Fill, Lechuguilla Cave, Guadalupe Mountains, New Mexico
Caves Cave Sediments Lechuguilla Cave
2011/12/6
Abstract: Lechuguilla Cave is a hypogene cave formed by oxidation of ascending hydrogen sulfide from the Delaware Basin. A unique sediment deposit with characteristics suggesting derivation from the l...
CLAYS IN CAVES OF THE GUADALUPE MOUNTAINS,NEW MEXICO
CLAY THE GUADALUPE MOUNTAINS NEW MEXICO
2011/11/10
The origins of clay minerals in the caves of the Guadalupe Mountains, New Mexico are categorized as (1) detrital, (2) inherited from the weathering of dolostone and siltstone, and (3) authigenic. Clay...
Authigenesis of Trioctahedral Smectite in Magnesium-Rich Carbonate Speleothems in Carlsbad Cavern and Other Caves of the Guadalupe Mountains, New Mexico
Authigenesis Carlsbad Cavern Caves Dolomite Huntite Moonmilk Stevensite Trioctahedral Smectite
2011/12/6
Abstract: Trioctahedral smectite is a constituent of Mg-rich carbonate crusts and moonmilks (pasty deposits) in caves of the Guadalupe Mountains of southeastern New Mexico. Energy dispersive X-ray mic...
The Kinetics of the Smectite to Illite Transformation in Cretaceous Bentonites, Cerro Negro, New Mexico
Bentonite Cerro Negro Cretaceous Illite I-S K-Ar Kinetics Microorganisms New Mexico Smectite
2011/12/7
Abstract: The thermal effects, as well as the survivability and origins of microorganisms in Cretaceous rocks, are evaluated from the timing and extent of the smectite to illite transformation in Cret...
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...
Electron Microscopy and X-ray Analysis of Lacustrine Clays from the Charo Canyon, State of Michoacan, Mexico
Clays Electron Microscopy Geology X-Ray Analysis
2011/12/8
Abstract: In this paper we analyzed by electron microscopy and X-ray diffraction (XRD) the exposed lacustrine clay in a stratigraphic column at Charo Canyon, State of Michoacán, Mexico. Smectite, cris...
Smectite Illitization in Pliocene-Age Gulf of Mexico Mudrocks
Clay Diagenesis Core Analysis Gulf of Mexico Illite Smectite TEM XRD
2011/12/1
Abstract: Utilizing high-resolution transmission electron microscopy (TEM), energy-dispersive spectroscopy (EDS) and X-ray diffraction (XRD) techniques, we have studied the transition from shallower s...
Alunite, Natroalunite and Hydrated Halloysite in Carlsbad Cavern and Lechuguilla Cave, New Mexico
Alunite Carlsbad Cavern Caves Hydrated Halloysite Lechuguilla Cave Natroalunite Sulfuric Acid Sulfur Stable Isotopes
2011/12/27
Members of an alunite-natroalunite solid solution series occur in intimate association with hydrated halloysite in deposits within caves of the Guadalupe Mountains, namely Carlsbad Cavern and Lechugui...
Alteration of Silicic Vitric Tuffs Interbedded in Volcaniclastic Deposits of the Southern Basin and Range Province, Mexico: Evidences for Hydrothermal Reactions
Basin and Range Hydrothermal alteration Mass-balance calculations Mexico Smectites Transmission electron microscopy Volcanic tuffs Zeolites
2011/12/1
Abstract: In Northwestern Mexico, the Miocene basins that disrupted the Sierra Madre Occidental Province are filled with sandstones and conglomerates (the Báucarit Formation) cemented mainly by zeolit...
Fluor-ferro-leakeite, NaNa2(Fe2+2Fe3+2Li)Si8O22 F2, a new alkali amphibole from the Canada Pinabete pluton, Questa, New Mexico, U.S.A
Fluor-ferro-leakeite NaNa2(Fe2+2Fe3+2Li)Si8O22 F2 alkali amphibole Canada Pinabete pluton
2012/4/5
Fluor-ferro-leakeite is anewamphibole speciesfrom the CanadaPinabetepluton,Ques-ta, NewMexico,U.S.A.;it occursin association withquartz, alkali feldspar, acmite, il-menite,and zircon. It forms asanhed...
Dioctahedral Tosudite in Hydrothermally Altered Pliocene Rhyolitic Tuff, Neutla, Mexico
Chlorite-smectite clay Clays Ditosudite Mexico Mixed-layer clay Tosudite
2011/12/28
Dioctahedral tosudite, a regular interstratification of dioctahedral chlorite-dioctahedral smectite, occurs associated with kaolin in the hydrothermal area of Delgado, Neutla, Mexico. Its composition ...
Paramagnetic Defect Centers in Hydrothermal Kaolinite from an Altered Tuff in the Nopal Uranium Deposit, Chihuahua, Mexico
Defect centers Electron paramagnetic resonance Hydrothermal Kaolinite Natural radiation
2012/1/5
Point defect centers in hydrothermal kaolinite have been investigated using electron paramagnetic resonance (EPR). Kaolinite was sampled in petrographically well-defined materials coming from uranium-...