Underground at the bonanza vein, low sulphidation, Hishikari mine.
Left and upper right: The right hand banded half of the vein averages over 400 g/t Au.   The massive left hand half of the vein, and the enclosing country rocks, are barren except where the latter contains banded veinlets.   NOTE the yellow rectangle on the left hand image shows the location of the upper right inset.
Below right: Members of the tour group with Sumitomo mine geologist Mr Margusa (right).

Photographs by Mike Porter.