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华南某地沉积錳矿位于海进层序的底部,属浅海相或海湾相胶体化学沉积。矿石类型:原生矿石有細条带状、碎裂状、条带状及薄层状等;次生氧化矿石,有块状、网格状、蜂窝状、腎状、钟乳状及角砾状等。菱錳矿及錳方解石結构:有鲕状、不规則粒状及隐晶质結构等。碳酸錳的沉积是在Eh略有減弱和pH值漸趋增高的条件下生成的,此时,海水的深度約为50—100米。本文就沉积錳矿床的成因,提出一些看法和意见。
The sedimentary manganese deposit in a certain area of South China is located at the bottom of the Haijin sequence and belongs to the chemical deposit of shallow marine or gulf colloids. Ore types: primary ore with fine strip, broken, strip and thin layer, etc .; secondary oxide ore, a block, mesh, honeycomb, kidney, bell-like and brecciated . Rhodochrosite and manganese calcite structure: oolitic, irregular granular and cryptocrystalline structure. The deposition of manganese carbonate was generated with a slight decrease in Eh and a gradual increase in pH, at which time the depth of the seawater was about 50-100 meters. This article puts forward some opinions and opinions on the causes of sedimentary manganese deposits.