Click on image to view larger version.
FIG. 5. Uranium silicate mineralization in core samples was confined to intragrain microfractures in granitic lithic clasts. (a and b) Backscattered electron images of nm-scale uranyl silicate florettes in fractures; K: potassium feldspar, P: plagioclase feldspar, S: smectite secondary mineralization. (c) Cross-section in transmission electron microscope image of florettes on the fracture face; Pt: platinum coating applied by focused ion beam tool. (d) transmission electron image of microcrystalline uranyl silicate domains within a uranyl silicate.
