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Biomineralization in the La' erma Gold Deposit of the Western Qinling Mountains
Author(s) -
Li LIN,
Lidong ZHU
Publication year - 1998
Publication title -
acta geologica sinica ‐ english edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.444
H-Index - 61
eISSN - 1755-6724
pISSN - 1000-9515
DOI - 10.1111/j.1755-6724.1998.tb00733.x
Subject(s) - biomineralization , mineralization (soil science) , geology , algae , geochemistry , hydrothermal circulation , mineralogy , paleontology , botany , biology , soil science , soil water
Geological and geochemical studies and experiments on mineralization indicate that the source bed of the La' erma gold deposit in the south subbelt of the western Qinling Mountains is hydrothermal cherts in the Cambrian Taiyangding Group. Organic geochemical study of the cherts shows that the organic precursors intimately associated with gold are marine bacteria and algae. The gold content in chert is positively correlated with the amount of bacterial and algal microfossils, and simulation experiments on biomineralization of modern bacteria and algae indicate that bacteria and algae played an important role in the formation of the La' erma gold deposit.