Scans of a fake rock cylinder (gold grains in quartz silt with epoxy, created by Alison Mote; ~13 mm core packed in 30-mm cylinder and surrounded with quartz flour) for Alison Mote of the Department of Geological Sciences, the University of Texas at Austin and Richard Ketcham. Scanned by Richard Ketcham on 01 December 2003.
1024x1024 16-bit TIFF format. II, 180 kV, 0.088 mA, no filter, quartz flour wedge, no offset, slice thickness 1 line (= 0.03175 mm), S.O.D. 93 mm, 1600 views, 1 sample per view, inter-slice spacing 1 line (= 0.03175 mm), field of reconstruction 30 mm (maximum field of view 30.48 mm), reconstruction offset 10000, reconstruction scale 35. Acquired with 21 slices per rotation. Total slices = 126. Scanned in two series, with 1-84 having most of the grains and 85-126 with the rest.