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斗南锰矿为一质量兼优的工业锰矿床.目前国内海相沉积锰矿床矿石相多为单一碳酸锰矿相,本矿床为原生氧化锰与原生碳酸锰混生的过渡型矿相.这里说的所谓过渡型矿相的概念,不仅包含沉积成因,也包括受变质成因的含义.笔者把产于中三迭统法郎组中的锰矿床暂名为“斗南式”锰矿.兹以斗南锰矿为例,叙述如下.矿床基本特征1.锰矿成矿时期及层位(1)本矿床含锰地层时代为中三迭世晚期(拉丁尼克期):①含锰岩系产于上三
Dounan manganese ore is an excellent quality industrial manganese ore deposit.At present, the domestic marine sedimentary manganese ore ore facies is mostly single carbonate manganese ore facies, the deposit is a transitional mineral facies of primary manganese oxide and primary manganese carbonate, and the so-called so-called The concept of transitional phase not only includes sedimentary genesis, but also includes the meaning of genesis by metamorphism.The authors tentatively named the “Mangnan-type” manganese deposit in the Middle Triassic Franc group and named it "Dounan Manganese ore as an example, described as follows.Original characteristics of the deposit 1.Mineralization period and horizon (1) The manganese-bearing strata of this deposit were in the late Middle Triassic (Latin America)