Gold grains from stream draining into concession. Image is 3.5 cm across. Click to enlarge (41 k).
Gold grains from concession mounted on scanning electron microscope (SEM) stub. Image is about 5 mm across. Click to enlarge (53 k).
Gold recovered from beaches and streams on the edge of the concession show many features common to placer gold. Grains are worn flat and rounded, but some angular grains suggest that the source of the gold is nearby.
Composite SEM image of a gold flake with well-rounded edges.
Enlargement of rounded edge on gold flake. Scale bar is 0.1 mm.