Mineralogy of Thoriferous Bitumen Nodules, Northwest Irish Basin
Thoriferous bitumen nodules in the Northwest Irish Basin are composed of an envelope of bitumen surrounding numerous inclusions of a range of thorium-calcium phospho-silicates. One nodule exhibits physical and chemical zonation, indicating episodic influx of mineralizing fluids with changing chemistry through time. Calculated chemical ages for the inclusions show a wide range of results indicating that Pb was present at the time of nodule formation and has undergone leaching subsequent to this.
KeywordsHydrocarbon Uranium Sandstone Shale Radioactive Element
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