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TEM investigation of Lewiston, Idaho, fibrolite: Microstructure and grain boundary energetics
grain boundary energetics Microstructure
2012/3/30
High-resolutiontransmissionelectronmicroscopy(HRTEM)revealedthatasampleof
?ne-grainedLewiston,Idaho,?broliteispredominantly?brolitewithtraceamountsof
poorlycrystallinelayersilicates.The?broliteconsi...
Relationships between microstructure and composition in enargite and luzonite
Relationships microstructure composition
2012/3/31
Cu3(As,Sb)S4 minerals commonly contain structurally disordered crystals of intergrown enargite and the luzonite-famatinite series (Po?sfai and Sundberg 1998). Here we discuss the relationships between...
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 Microstructure of Vermicular Glaucony
Transmission electron microscopy Vermicular glaucony
2011/12/1
Abstract: Vermicular glaucony grains observed by transmission electron microscopy (TEM) show three irregularly alternating zones. Zone A has a high degree of linear orientation, no void space, and rel...
The Microstructure of Three NA+ Smectites: The Importance of Particle Geometry on Dehydration and Rehydration
Beidellite Layer charge Microstructure Montmorillonite Particle Smectite TEM
2011/12/28
Recent pedological evidence of the widespread distribution of beidellites in soils indicates the need for a greater knowledge of the effect of charge location on the microstructural organization of Na...
Morphology, Texture, and Microstructure of Halloysitic Soil Clays as Related to Weathering and Exchangeable Cation
Exchangeable cation Halloysite Interstratification Microstructure Smectite TEM
2011/12/31
This paper aims at characterizing the morphology, texture, and microstructure of three hydrated kaolin rich clays (f < 0.2 µm) from volcanic soils. These clays represent a weathering sequence in...
Influence of Calcium and Sodium Concentration on the Microstructure of Bentonite and Kaolin
Aggregation Bentonite Electrolyte Flocculation Kaolin Scanning electron microscopy
2012/1/5
The influence of added sodium and calcium nitrate electrolyte on the particle aggregates in the colloid fraction of natural bentonite and kaolin was studied. Clays were flocculated in distilled water ...
Microstructure in Mixed-Layer Illite/Smectite and its Relationship to the Reaction of Smectite to Illite
Edge dislocation Illite Lattice image Mixed layer Smectite Transmission electron microscopy X-ray powder diffraction
2012/1/11
The reaction of smectite to illite in shale from the COST 1 well in the south Texas Gulf Coast and from altered ash-fall tufts from the Morrison Formation in New Mexico was investigated using X-ray po...
Microstructure, Mineralogy and Chemistry of Cambrian Glauconite Pellets and Glauconite, Central U.S.A.
Microstructure Mineralogy Cambrian Glauconite Pellets
2012/2/13
Glauconite pellets in the Cambrian of the central U.S.A. frequently contain two textural forms of glauconite–aggregate and oriented—which differ in both mineralogy and chemistry. The aggregate glaucon...
Microstructure and Pore Structure of Impact-Compacted Clays
Microstructure Pore Structure Impact-Compacted Clays
2012/2/20
The microstructures of impact-compacted kaolinite and illite clays, after drying, were investigated by pore size-distribution measurements, X-ray orientation determinations, and scanning electron micr...