我国发现一特大金矿！

Core Insights - The exploration project of the Dongbeizhai gold mine in Songpan County, Sichuan Province, has passed the evaluation by the Sichuan Mineral Resources Reserve Evaluation Center, indicating significant progress in gold resource identification [1] Group 1: Project Overview - The Dongbeizhai gold mine has added a gold resource of 28.24 tons, bringing the total identified gold resource to 81.06 tons, classifying it as a super-large scale mine [1] - The average gold grade of the mine is reported to be 3.75 grams per ton, making it the largest gold mine in terms of registered resource volume in Sichuan to date [1] Group 2: Exploration Efforts - The exploration work for the Dongbeizhai gold mine has been undertaken by the Tenth Geological Brigade of the Sichuan Geological and Mineral Exploration and Development Bureau [3] - The mine was discovered in the 1970s and has seen continuous efforts from several generations of geologists in Sichuan, with nearly 100,000 meters of drilling and over 4,000 meters of tunnels constructed [3] - A total of 35,000 samples have been collected during the exploration, leading to a significant breakthrough in mineral discovery [3]