我国探明首个千吨级超大型金矿床

Core Insights - The Dadongou gold mine in Liaoning Province has been successfully identified as China's first thousand-ton, low-grade super-large gold deposit, with a boundary grade of 0.25 grams per ton [1] - The mine has been economically validated for development, showing promising expected benefits [1] Summary by Categories Resource Discovery - The gold ore volume of the mine is confirmed to be 2.586 billion tons, with a total gold metal content of 1,444.49 tons and an average grade of 0.56 grams per ton [1] - The maximum strike length of the deposit is 3,128 meters, with a maximum inclined depth of 1,250 meters and an average thickness of 263.35 meters, reaching a maximum thickness of 513.49 meters [1] Technological Advancements - The exploration process successfully installed a variable frequency device in the phyllite area, enabling dynamic control based on rock hardness, drilling speed, and pressure, effectively managing drilling deviation [1] - The project utilized 3D modeling technology to display the mineral body status and employed geological statistical methods to estimate resource quantities, with results verified by traditional geometric methods [1] Strategic Importance - The successful implementation of this exploration project strengthens the national gold resource strategic reserve and provides a successful example for deep and peripheral exploration of existing resource bases, significantly enriching gold mineralization theories [1]