Discussion Of Characteristic Of Thermomagnetic Component And Enrichment Process Of Elements

As a new method in buried deposit ore prospecting, soil thermomagnetic component measurement can strengthen the weak mineralization information, mainly applied in coverage regions where conventional geochemical exploration methods are not effective. With the good stability and abnormal reprocucibility, this method can intensify weak mineralization information caused by deep ore body and achieve the purpose of strengthening the anomalies making sense to the ore-body instruction.This paper takes the Caijinying lead-zinc-silver test area as the research object, and carry out the research on the morphology features of soil thermomagnetic component. The discussion of the mineralogical features、 chemical analysis and the enrichment of indicator elements, as well as the demonstration application provide the theoretic bases of the soil thermomagnetic measurement. The research demonstrates:(1) Crystalline Fe-Mn oxides that is transformed by the noncrystalline Fe-Mn oxides is the predominant ingredient in soil thermomagnetic components, which exist in forms of single grain or particle aggregates.(2) The correlative analysis between Fe-Mn oxides and mineralized indicator elements of soil、 soil thermomagnetic components and nonmagnetic components confirms the enrichment of soil thermomagnetic components on the mineralization indicator elements.Based on the contrast analysis of the characteristic statistical parameters and geochemical anomalies applied in Zhunsujihua test district, the results illustrates that whether from the point of the anomaly intensity or the anomaly size, the effects in soil thermomagnetic survey are more remarkable than that in standard soil survey, and more importantly, soil thermomagnetic survey is more powerful in detecting the weak mineral information, showing the application prospect in coverage areas.The factor and cluster analyses are applied to research the characateristics of the data and element combination in Zhunsujihua test area, and the factor score maps are drawn to indicate the information of the geochemical comprehensive anomaly. The results confirms that the statistical analysis used in the interpretation and evaluation of geochemical anomaly in soil thermomagnetic measurement can better recognize the characteristics of the geochemical elements on the whole, and the relationship of the geochemical information can be figured out in geochemical thermomagnetic components, which provide more reliable foundation for strengthening the anomaly with profound senses.