我国探明首个千吨级低品位超大型金矿

Core Insights - Liaoning Province has successfully identified China's first thousand-ton, low-grade super-large gold deposit, the Dadonggou Gold Mine, with a boundary grade of 0.25 grams per ton [1] - The mine has passed economic feasibility assessments, indicating promising expected benefits [1] Group 1: Exploration and Development - The gold deposit was first discovered in 1983, with significant progress made during surveys in 2009 and 2015 [2] - A new integrated exploration model was implemented in 2024, involving 18 production and research units working collaboratively [2] - During peak construction, 45 drilling rigs operated simultaneously with nearly 1,000 workers, establishing a multi-level collaborative and closed-loop management system [2] Group 2: Technical Innovations - The project successfully installed variable frequency devices in the phyllite area, allowing dynamic control of drilling speed and pressure based on rock hardness [2] - Three-dimensional modeling technology was used to display the mineral deposit's status, and geological statistical methods were applied to estimate resource quantities [2] Group 3: Strategic Importance - The Dadonggou Gold Mine exploration project is a key initiative identified by the Liaoning Provincial Party Committee and government, enhancing national gold resource strategic reserves [3] - The project serves as a successful example for deep and peripheral exploration of existing resource bases, significantly enriching gold deposit formation theories [3] - It plays a crucial role in establishing a world-class gold industry base in Liaodong and supports the comprehensive revitalization of Northeast China [3]