Western Sichuan Asbestos Ditch Tellurium Deposit Law Of Structural Control Of Ore And Prospecting Predicted That

To date Dashuigou tellurium deposit, is the sole example of tellurium-demainted deposit in the word. Under the data mining and open country geological investgations, this paper studied the structural ore-controlling regularity by using the research methods of mineral deposits, structural geology and geochemistry,we obtain the following several understandings.1. Dashuigou Te Ore is dual controlled by regional ductile shear zone and deep magma upwelling microstructure. According to mining strata Te is much higher than the Clark value of the crust (300-15000 times), showing the Paleozoic strata in the Te enrichment carried out in advance.2.Since the Triassic tectonic, the regional stress field experienced a north-south compressionâ†'north-south extensional detachment (thrust)â†'east-west contraction extrusion (shear)â†'east-west extensional tectonic evolution.3. In mineralization and mineralization, due to the changing of regional stress field (thrust, slip shear zone activities), resulting in twisting and stretching occur ore, ore bodies occur as S-type and anti-S-bend, appears to pinch out in the reappearance of a partial enlargement of the profile. The principal stress direction of compression performance for the NE-SW contractionâ†'SN and EWâ†'EW extension of the evolutionary process.4. Structural control laws:The Anning River fault is the structure for the lead mines, the two ductile shear zone with ore and lead ore for the construction, mining area near north-south crack to the main sub-The ore-hosting structure. According to Mick NO1 tons of veins plane and profile contour analysis, of about 50m-70m to a peak, but gradually pinch the trend shown in the section on the north to the collapse of the characteristics of the East5. By analyzing the quartz flakes of construction of directional fabric of F1 fault, mining mineral deformation is stronger in Dashuigou mining area, it showes consistention with the macro-judgments.6. Using Mapgis spatial,We delineated five prospecting areas to guide the work of prospecting and exploration for the next step.