Jz. Liu et al., EXPERIMENTAL RESEARCH ON THE ROLE OF ORGANIC-MATTER IN FORMATION OF SEDIMENTARY-REWORKED GOLD ORE-DEPOSITS, Science in China. Series B, Chemistry, life sciences & earth sciences, 37(7), 1994, pp. 859-869
The paper deals with interaction of gold-organic matter in these aspec
ts, (i) leaching of gold from rock samples by water solutions containi
ng organic acids or crude oil; (ii) extraction of gold from water solu
tions by crude oil and distribution of gold in group components of cru
de oil; (iii) mobilization and transportation of gold with generation
and migration of petroleum of oil shales; (iv) kinetics of the reducti
on of Au3+ to Au0 by bitumen. The results show that organic matter may
play an important role in formation of some sedimentary-reworked gold
ore deposits by promoting leaching. migration, reduction and precipit
ation of gold.