简介：Chinaisamongthefewcountriesrichinpytophyllite.ItisinferioronlytoJapanandSouthKoreainprovedorerescrvesandranksthirdintheworldinperspectivereservesPyrophylliteoccurrencesinSupportcdbytheNaturalScienccFoundationofHunanProvinceandthcDirectorFoundationofChangshaInstituteofoeotectoniCS,ACademiaSinica.Chin

简介：0vcrl00pyrophylliteoccurrcnccs(dcposits,orcsp0tsandmincralisedsp0ts)havebeenfuul1dinChina-Am0ngthemab0ut90%arerelatcdtotbeacti0nofv0lcanicgas-1iquidandaccountf0rabout87Koftbcprovcdrcserves.ManylargcandsuperlarScpyr0phy1litedcp0sitsbclongtothistype.Thercf0re,pyr0phyllitedep0sitsofv0lcanicgas-1iquida1

简介：<正>GEOTECTONICBACKGROUNDOFPYROPHYLLITEMINERALIZATIONANDORE-BEARINGVOLCANICFORMATIONINSOUTHEASTERNCOASTALAREAS,CHINAWangLing(ChangshaInstituteofGeotectonics,AcademiaSinica,Changsha,410013,Hunan,China)LiuDongshen(GeologicInstitute,NationalConstructionMaterialIndustryBureau,100010,Beijing,China)pyrophyllite,Diwastructure,nonmetallicmetailogeny,ore-bearingforma-tion,theSountheasternCoastalAreas,ChinaThevolcanicgas-liguidtypeofpyrophyllitedepositsintheSoutheasternCoastalareas,Chinaaretheproductoftectono-magama-volcanisminDiwaregions.Thepyro-phylliteore-bearingvolcanicformationwereformedinthemaximum-mobilityperiodofDiwa,whicharemainlytheLateJurassicstrataandaresecondlytheEarlyCretaceousvolcanic-sedi-mentaryrockseriesstrata.Thelithologyofthehostrockismainlyrhyoliticcrystal-vitrictuff,andthechemicalcompositionischaracterizedbyhighsiliconrichalumiumandlowiron,be-longingtothea