Abstract:
BACKGROUNDThe Panxi super large-scale Taihe vanadium-titanium magnetite deposit is located in the mafic-ultramafic layered intrusions. Research on the characteristics of infrared spectroscopy of the typical minerals of this deposit is relatively lacking, restricting exploration efficiency. The Panxi area would benefit from the use of infrared spectroscopy technology, which in recent years has attracted much attention because of its green, fast, non-destructive and accurate detection of minerals, and improvement of exploration efficiency.
OBJECTIVESTo analyze the characteristics of different minerals and to efficiently identify ore-bearing intrusions and mineralized regions in the Taihe vanadium titano-magnetite deposit in the Panxi area, Sichuan Province.
METHODSMinerals were identified using Handheld FTIR through thermal infrared (TIR). The contents of Fe, Ti, and V were analyzed by Vanta VMW portable XRF. The magnetic susceptibility was analyzed by KM-7 portable magnetic susceptibility tester. Based on the core catalog, the relationship between borehole lithology, mineral assemblage, element content, and magnetic susceptibility value was studied.
RESULTSTIR can be used to achieve rapid and non-destructive extraction of the characteristic absorption peaks of pyroxene, identify the distribution of magnetite-bearing pyroxenite, and quickly define ore-bearing rock masses. The contents of Fe, Ti, and V in the Taihe deposit can be linearly fitted by magnetic susceptibility values. Different kinds of rocks and ores have different contents of Fe, Ti, V and magnetic susceptibility value.
CONCLUSIONSTIR technology is useful for prospecting magnetite-bearing rocks or deposits in unknown areas. The higher contents of Fe, Ti, and V and magnetic susceptibility values can be used as indicative information for judging the mineralization of geological bodies.
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