Discussion on Formation 63 Mechanism of Graphite Mine in Northern Core of Huangling Faulted Dome, Hubei Province

摘要

The carbon of graphite mine in northern core of Huangling faulted dome is derived from the microbes (algae), and the microbes are enriched and buried in the Paleoproterozoic era between intercontinental sea epicontinental tidal flat facies and lagoon facies, and asphaltization in the reduction environment. After the regional thermal power metamorphism ,organic carbon is converted to (scaly) crystalline graphite at high amphibolite temperature and pressure (P = 5- 5-7. 5 kb, t = 600 -700 °C). Late magmatic activity and mixed petrophysization are favorable for graphite mineralization, and the relationship between tectonic action and graphite mineralization needs further study.The carbon of graphite mine in northern core of Huangling faulted dome is derived from the microbes (algae), and the microbes are enriched and buried in the Paleoproterozoic era between intercontinental sea epicontinental tidal flat facies and lagoon facies, and asphaltization in the reduction environment. After the regional thermal power metamorphism ,organic carbon is converted to (scaly) crystalline graphite at high amphibolite temperature and pressure (P = 5. 5-7. 5 kb, t = 600 -700 °C). Late magmatic activity and mixed petrophysization are favorable for graphite mineralization, and the relationship between tectonic action and graphite mineralization needs further study.