超7亿吨！我国找矿有重大发现

Core Viewpoint - Gansu Province has discovered a large magnesium dolomite mine with a resource volume exceeding 700 million tons, marking a significant breakthrough in mineral resource exploration in the region [1][2]. Group 1: Discovery Details - The mine is located in the Kongtong District of Pingliang City, specifically in the Zhuanmatai area [1]. - The mineral body is found in the Middle Proterozoic Jixian System Wangquankou Formation shallow marine carbonate rock strata, with five layered magnesium dolomite mineral bodies identified [1]. - The average magnesium oxide grade in the ore is 20.67%, indicating it is a high-quality magnesium dolomite mine, characterized by a large scale, shallow burial, gentle dip, and stable thickness, making it suitable for open-pit mining [1]. Group 2: Resource Utilization - Within the open-pit mining area, over 700 million tons of dolomite for magnesium use have been confirmed, along with more than 300 million tons of dolomite for construction purposes [2]. - The utilization value of dolomite resources is diverse; it serves as an important raw material for magnesium metallurgy and can also be applied in refractory materials, metallurgical flux, glass, and ceramics, indicating significant potential for comprehensive resource utilization [2].