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Geologic Control of Severe Expansive Clay Damage to a Subdivision in the Pierre Shale, Southwest Denver Metropolitan Area, Colorado
Bentonites Expansive clays Pierre Shale Smectites
2011/12/27
Abstract: Shortly after construction of a subdivision in the southwest Denver metropolitan area in 1986, a portion of the subdivision built directly on steeply-dipping strata of the Pierre Shale began...
The Composition and Origin of Vanadium-Rich Clay Minerals in Colorado Plateau Jurassic Sandstones
Chlorite Diagenegis Illite Microprobe Roseoelite Sandstone SEM Vanadium
2011/12/29
The composition and origin of vanadium-bearing clay minerals in the Jurassic (Morrison and Entrada Formations) sandstones of the Colorado Plateau are reassessed using microanalyses (microprobe and sca...
Goyazite in Kaolinitic Altered Tuff Beds of Cretaceous Age Near Denver, Colorado
Diagenesis Goyazite Kaolinite Phosphorus Volcanic ash
2012/2/7
A hydrated alumino-phosphate mineral was identified in thin, kaolinitic clay beds of the Cretaceous Dakota Group and the overlying Mowry Shale in the Dakota hogback west of Denver, Colorado. It occurs...
A Purple-Colored 1M Mica Clay from Silverton, Colorado
Purple-Colored 1M Mica Clay Silverton
2012/2/21
A purple-colored clay of 1M mica polymorph in association with lead-zinc ore was collected from an abandoned mine dump near Silverton, Colorado. Electron micrographs show that the crystallites of the ...