河北承德大庙黑山钒钛磁体矿床地质特征与成因探讨

83920099ACTAGEOLOGICASINICAVol.83No.9Sept.2009:(200613068):2009205220;:2009207205;::,,1970,,Email:[e-mail]1),1),1),1),1),2)1),,067000;2),,050081:,,,,,,,,:(2);2(22)(3%60%)(2%19%)(7%27%),(7%33%),(0%45%),,SiAlFeTiPNaK,CaMg,18O,34S+1.3+2.1,2615975,:;;;;;,,2006,3.99,3.58;75.54,(,1988),(120km2),(85%11%4%,),2(Yeetal.,1996),,2002,028,650450m28,200400m,500,M31200622009,16000m20089000m;1200010km;9000m333()1000,,,()2()9:,,(),,,,,,?,,,131km,,1.58km2:11751391175215,410928411028(1),,25km(1)1(,1989)Fig.1Distributionofanorthosite,ore2formingnoriteandmonzoniterockbodiesinDamiaoanorthositearea(afterYeDonghu,1989)1;2(Ar);3;4(Q);5(4);6(35);7;Q;J;121;1222;2;3();35;o41Jurassic;2Archean(Ar);3Ore2formingmetamorphicnorite;4quartzsyeniteporphyry(Q);5diorite(4);6quartzsyeniteporphyry(35);7LocationofNo.1and2orebodies;QQuaternary;JJurassic;121Damiaoanorthositebody;122Gangzinorite2anorthositebody;2ore2formingnoritebody;3monzonitebody();35dioriteporphyry;o4hornblenderocks,pyroxeneamphibolite,,,,,,,,,,,,,,,15m,,(1),;,,,1254312009km,0.21km(),45,,4060;10km,0.10.3km,40,,50,,,,(1)U2Pb16931715Ma(,2004)40Ar/39Ar984.120.2Ma,,1210,10(,1989),,,200m,,,,3km,,,,,;1km,,,1.58km22,:;,,,,,85.74%,,,14.26%2.1,,,:(1)()(2a),,,(98%);;,,,,(2)(2d),:,,Nm1.5751.580,,0.30.5mm,,Nm1.6211.633,(3),,(40%75%),,,,2.2,,:,1200m,20400m,4,,1200m,40250m3050,,5070;,680m,30140m,5,,500m,100m5060,,70,,,,,,,,:(2e,f),64319:2Fig.2ThecharacterofDamiaoanorthositeundermicroscrope(a);(b);(c);(d);(e);(f)Pl;Mag;Sa;Chl(a)plagioclasephenocrystinanorthosite;(b)apatiteinmagnetiteanorthosite;(c)liquation2likesanidineinmagnetiteplagioclase;(d)chloritizationinmagnetiteore;(e)plagioclaseinnoriteore;(f)sanidineenclosedinchlorite.Plplagioclase;Magmagnetite;Sasanidine;Chlchlorite()-()-,2()274312009()33.130,,,650m,4,(AB)4,,,11650m,1,234,123,4650450m,70,650m11,8189(3)(4)733m,733650m2004650450m,,650m650m,;(1)650m,AB,,,,,733m,,733m733m,1234,1234,1,733650m,11,,,M6(2)650m650450m,450m,650m::74,1650m,234650m2:04,1,650m79.50m,9.0029.00m,19.05m03,578m,333.32m11.38m4.98m,16.56m,650m110mTFe29.32%36.70%,33.44%;TiO26.47%9.72%,8.65%;V2O50.372%0.634%,0.419%5075,,607012.093:07,650m150m,1.364.08m,2.72m;100m,4.085.44m,4.76m02,52m,605m23,:5765,,6021.02m2.79m1.80m8.20m3.45mTFe22.72%44.98%,30.33%;TiO25.83%13.63%,7.98%;V2O50.202%0.488%,0.267%,2.414:20,650m50m,0.934.21m,2.22m,30m,620m(2)TFe20.90%38.26%,25.16%;TiO24.66%9.47%,5.94%;V2O50.316%0.419%,0.249%,:65,,450.84:028,1234650m1:,(650450m)70%650m04,84319:3(,2008)Fig.3GeologicalmapofNo.1and2orebodiesinHeishanFedeposit,GaositaiTown,ChengdeCounty,HebeiProvince(The4thGeologicalProspectingTeamofHebeiBureau,2008)1;2;3;4;5;6;7;8;9;10()/1anorthosite;2norite;3troctolite;4massivevanadium2titaniummagnetite;5massive2disseminatedtypevanadium2titaniummagnetite;6disseminatedtypevanadium2titaniummagnetite;7measuredgeologicalexplorationboundary;8Orebodynumber;9locationandnumberofthemeasuredexplorationlines;10(oldundergroundaditaditnumber)/Height100m,1.814.53m,3.17m,8165,:1812,100m,7.5215.50m,11.51m,;212,50m,1.69m,;3816,150m,1.753.50m,2.63m,;412,50m,2.07m,;516,50m,0.66m,202811,2028,150m,2854.03m,60.14m,101.49m,71.89m,,288,20,50m,1.77m,,,9431200905319:1,020,250m,650m19.66m0641m,4617m,8607m,12619m16647.50m,20650m650m,865m(,),2050m1228,12567.50m,200m;16601m,225m;20650m275m;24650m283.50m;28650m292m12,650m520m(),400m1650m424,3.54m(ZKP1203),100.23m(ZK2001),5070m,46.11m,2417,30.336%,65,,60TFe20.03%43.94%,36.81%;TFe30%,TFe40%TiO24.57%11.41%,9.22%;V2O50.203%0.531%,0.404%2417,1:386,TFe6.95%,V2O510.57%,TiO29.01%,1385.132:416,650m4,:1816,150m,23.50m24.00m1.50m,16.33m,,13;2412,150m,2.35m5.64m1.41m,3.13m,;316,50m,1.60m,;416,50m,2.82m,450m416,2024650m625m;8650m475m;12650m364m;16650m417m;20512m,468m12,650m328m,150200m65,,5060650m213,0.46m(ZKP1604),65.34m(CM12),11.7120.09m,18.60m,,TFe21.65%44.00%,33.46%,2/3TFe30%TiO24.79%11.30%,8.02%;V2O50.245%0.620%,0.363%224.573:1620,650m100m,9.8734.30m,22.01m,650m16591.50m,20589m20,650m60m65,,71650m51,0.37m,34.30m,1.105.38m,8.53mTFe21.85%45.18%,38.87%,TiO25.9611.38%,9.74%;V2O50.120%0.564%,0.449%13.24,650m70650m11,81,321.5970,15,M3M582,:(1),,,6070(2),,,,,(3),15312009,,,,,60,(4)400m,200m,,2,,,,,24(5),,TFe30%,(20%),50%5(,1972)Fig.5Rocktypeclassificationofore2formingnorite(IgneousGroupofInternationalUnionofGeologicalScience,1972)12;2;32;4;521ore2sourceolivinenorite2noriterockbodyinHeishan;2ore2sourcenoriterockbodyinMaying;3ore2sourcenoriterockbodyinLuoguozigou2Dawusugou;4ore2sourcenoriterockbodyinDamiao;5ore2sourceolivinenorite2noriterockbodyinWulongsugou3.2:,,,,,;,,,,,,,TFe,,,,2020m2040m,;,,,,,(),,,4,,,CIPW,Pl2Opx2CpxPl2(Opx+Cpx)2Ol(5),25319:,,,4.11:SiO2,49.01%51.28%,,SiO22%3%,TiO2,,Al2O3:16.21%21.45%,3%,4%7%Fe2O3,3%4%,FeO,5.63%,2%4%MgO,CaO,Na2O+K2O,35,SiAlFeTiPNaK,CaMg,,,An4.2,2,,,,,SiO2TiO2,12;,Al2O3,,Fe2O3,V2O5,,MgO,(2)(1),SiO212TiO2,13Fe2O3,,FeOV2O5,2,13Cr2O3MgO(2),:SiO2TiO2Cr2O3MgOFeO,,V2O5Fe2O3,,33:(1),SiO2(2)TiO2,,TiO2TiO2(3)FeOMnOV2O5Cr2O3,(4)MgO,MgO(5)MgO,MgO(6)FeOTiO2,,TiO2(3),,,(7)TFeTiO2,TFe/TiO2,4.3,:3531200945319:55312009:,,,,,,0.28.0mm,1cm:,,(110)(