简介:Basedontheanalysisofsideritedistribution,occurrence,chemicalcompositionk,structurealcharacteristics,carbon-oxygenisotopiccharacteristicsandrelationshipbetweensideriteandhematite,thispaperpresentsasystematicstudyofsideriteintheregionstudied.suggestingthatthesideriteintheXuanlongareageneticallyresultedfromorganicallyreducedprimaryhematiteduringthediagenesis.Theferricandferrousrelationsdirectlydependonorganiccontents.Inthepresenceoforganicmatterferrousironcanbeconvertedtoferricironthroughorganicreduction.Theaboveconclusionhasalsobeenprovedbyorganicgeochemistry.data.