Sedimentary Environment and Metallogenic Mechanism of Manganese Deposits in the Neoproterozoic Datangpo Formation, Southwestern Hunan, South China

Key Points

• The study aims to reconstruct the sedimentary and metallogenic processes of manganese deposits in the Datangpo Formation.
• Utilized petrology, mineralogy, elemental geochemistry, and C/Sr isotope data.
• Analyzed ancient climatic conditions, redox states, and salinity indicators.
• Integrated findings to explore manganese source and sedimentation in a geological context.
• Manganese ores include primary carbonate and secondary oxidized forms influenced significantly by weathering.
• High initial 87Sr/86Sr ratios in primary manganese carbonates suggest control by low-temperature hydrothermal fluids.
• The transition from anoxic conditions to high salinity in the basin facilitated manganese migration and precipitation.