From Mt Greenock it is possible to see many more mullock heaps. In 1866 there were up to 560 miners in the Mt Greenock area. The mine sites were on top of the deep leads, the gold bearing gravels beneath the basalt. The gravels were the bed of an ancient river system. The gravels were eroded from Ordovician rocks, which contained gold bearing quartz reefs. Underground water often forced the closure of a mine. |