MOLECULAR FOSSILS FROM THE FLUID OF Pb Zn Ag POLYMETALLIC DEPOSIT AT QIXIASHAN, NANJING

Identification of organic matter in ore forming fluid is the keypoint in the studdying of biometallogenesis on hydrothermal ore deposits. This paper focuses on the molecular fossils in hydrocarbon inclusions from the Qixiashan polymetallic deposit in Nanjing. The optical and spectral characteristics of the individual hydrocarbon inclusions are systematically examined through such non destructive methods as Fourier transform infrared micro spectroscopy and ultra violet fluorescent microscope photometer. Series of biomarkers in metallogenic fluid are identified through gas chromatography mass spectrometry(GC MS). These biomarkers indicate that organic matter in ore froming fluid is derived from algae and bacteria. The investigation on the molecular fossils from fluid further strengthens biometallogenesis in the deposit which is previously discussed according to the mineralized organisms.

Project Supported:

Clc Number:

P618.201