362023年第5期中国非金属矿工业导刊总第161期【矿产资源】江西宁都官齐坑地区瓷土、瓷石矿地质特征与矿床成因王洪荣,王凯(江西省地质调查勘查院矿产勘查所,江西南昌430038)【摘要】本文研究了官齐坑瓷土和瓷石矿在矿体形态、矿石质量等方面的异同,指出官齐坑地区瓷土、瓷石矿原岩为正长花岗岩脉,瓷土矿的厚度相比瓷石矿变化更大;具有更低的Na2O含量、更高的K2O/Na2O比值;瓷土矿的稀土配分模式为平直型,具有明显的Eu正异常特征。烧制试验表明,瓷土、瓷石矿可以作为制作日用陶瓷的配料和建筑陶瓷原料。矿床的成因与岩浆作用、表生作用及地貌作用等有关,涉及成岩过程、风化过程、元素富集过程等。【关键词】瓷土瓷石矿;地质特征;矿床成因【中图分类号】P619.231【文献标识码】A【文章编号】1007-9386(2023)05-0036-05GeologicalCharacteristicsandGenesisofPorcelainStoneDepositsinGuanqikengArea,NingduCounty,JiangxiWANGHong-rong,WANGKai(MineralExplorationInstituteofJiangxiProvincialGeologicalSurveyandExplorationInstitute,Nanchang430038,China)Abstract:Thisarticlestudiesthesimilaritiesanddifferencesinoremorphology,orequality,andotheraspectsbetweenporcelainclayandporcelainstoneorebodiesintheGuanqikeng.ItispointedoutthattheoriginalrockofporcelainclayandporcelainstoneoreintheGuanqikengareaisasyenitevein,andthethicknessofporcelainclayorevariesmorethanthatofporcelainstoneore;HavinglowerNa2Ocontent,higherK2O/Na2Oratio;Therareearthdistributionpatternofporcelainclayoreisstraight,withobviousEupositiveanomalycharacteristics.Thegenesisofmineraldepositsisrelatedtomagmatism,epigenesis,andgeomorphology,involvingdiagenesis,weathering,andelementenrichmentprocesses.Keywords:porcelainstonedeposits;geologicalcharacteristics;genesisofdeposits瓷土和瓷石矿可作日用、卫生、电瓷、建筑陶瓷等[1],是国民经济中重要的矿产资源。因工业需要,瓷土和瓷石矿的消耗逐年增加,具有较好的开发利用前景[2]。瓷土、瓷石矿多由酸性火成岩经热液蚀变和风化作用形成,主要类型包括石英斑岩型瓷土、瓷石矿,花岗斑岩型瓷土、瓷石矿,霏细岩型瓷土、瓷石矿,次生石英岩型瓷石矿等[3]。随着现代选矿工艺和陶瓷工艺水平的提高,出现了新的瓷土瓷石矿类型,如江西宁都官齐坑矿区,为花岗岩脉型瓷土...