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根据大石桥—海城一带菱镁矿床实际开采资料,总结了地质连图中应遵循的主要规律,以提高矿量计算的准确性。辽宁大石桥-海城一带已露天开采的菱镁矿床,有圣水寺、青山怀、桦子峪、金家堡、下房身、杨家甸等矿区。从实际开采资料来看,该菱镁矿床是沉积变质矿床。它产于前震旦纪辽河系大石桥统的白云岩层中,具有一定的层位,分布广泛而且稳定。矿体具有明显的层理,层面具有泥质物和滑石薄膜,有的与滑石片岩、千枚岩,滑石化千枚岩呈互层产出(桦子峪,下房身)。
According to the actual mining data of magnesite deposit in Dashiqiao - Haicheng area, the main laws to be followed in the geologic continuum are summarized to improve the accuracy of the ore amount calculation. Liaoning Dashiqiao - Haicheng area has been open-pit mining magnesite deposit, a holy water temple, Aoyama Huai, Birch Valley, Golden Fort, the next room, Yang Jidian and other mining areas. From the actual mining data, the magnesite deposit is deposited metamorphic deposit. It is produced in the former Sinian Liaohe Dashiqiao dolomite strata, with a certain horizon, widely distributed and stable. The orebodies have obvious stratification, with mudstone and talc film on the surface, and some interbedded with talc schist, phyllite and talcum phyllite (Chengziyu, Xiafangshi body).