Bioleaching of Arsenic-Rich Gold Concentrates by Bacterial Flora before and after Mutation

Table 1

Elemental composition of arsenic-rich gold concentrates.

Element	Content (%)
Fe	19.3
As	9.3
S	20.4
Ni	0.024
Zn	0.266
Pb	0.08
Cu	0.086
Ca	2.9
Ag	0.006
Au	<0.001