CAJ | 학술논문

白锡腊矿段深部铁铜矿体属于与碱性钛铁质辉长岩侵入体有关的铁氧化物铜金型(IOCG)矿床。采用井巷工程构造岩相学填图技术，对云南东川白锡腊碱性钛铁质辉长岩类侵入体的侵入构造系统和控矿规律进行研究，认为滥泥坪-白锡腊铁铜矿段深部 IOCG 矿体产于碱性钛铁质辉长岩类侵入体的边缘，古火山机构、碱性钛铁质辉长岩侵入体、隐爆角砾岩体、多期叠加断裂构造和裂隙破碎带等是白锡腊 IOCG 矿床的控制构造组合样式。在辉长岩类侵入体中发育的脆韧性剪切带、热液角砾岩带和断裂-裂隙带等构造岩相学部位，构造-热流体耦合和水岩反应强烈，形成了蚀变构造岩相带。IOCG矿体的储矿构造类型为辉长岩类侵入体的膨大与转折部位的底部和产状变化部位、隐爆角砾岩和构造裂隙破碎带等。辉长岩侵入体的过渡相、含矿隐爆角砾岩相和蚀变构造岩相带等，它们是隐伏IOCG矿床的直接找矿预测标志。预测在白锡腊矿段深部和白锡腊-哑巴峡倒转背斜-断裂破碎带北翼深部具较大找矿前景，是寻找大型IOCG矿床有望靶区。
백석석광단심부철동광체속우여감성태철질휘장암침입체유관적철양화물동금형(IOCG)광상。채용정항공정구조암상학전도기술，대운남동천백석석감성태철질휘장암류침입체적침입구조계통화공광규률진행연구，인위람니평-백석석철동광단심부 IOCG 광체산우감성태철질휘장암류침입체적변연，고화산궤구、감성태철질휘장암침입체、은폭각력암체、다기첩가단렬구조화렬극파쇄대등시백석석 IOCG 광상적공제구조조합양식。재휘장암류침입체중발육적취인성전절대、열액각력암대화단렬-렬극대등구조암상학부위，구조-열류체우합화수암반응강렬，형성료식변구조암상대。IOCG광체적저광구조류형위휘장암류침입체적팽대여전절부위적저부화산상변화부위、은폭각력암화구조렬극파쇄대등。휘장암침입체적과도상、함광은폭각력암상화식변구조암상대등，타문시은복IOCG광상적직접조광예측표지。예측재백석석광단심부화백석석-아파협도전배사-단렬파쇄대북익심부구교대조광전경，시심조대형IOCG광상유망파구。
The Baixilairon oxide copper-gold deposit is an IOCG-type deposit which is closely related to the alkaline Ti-Fe-rich diorite-gabbro intrusions. Using the tectonic lithofacies mapping methods, the characteristics of alkaline Ti-Fe-rich gabbro stock and its intrusive structure system for the ore-controlling patterns were studied in the Baixila area. It may be supposed that the IOCG-type orebody was located nearby the alkaline Ti-Fe-rich gabbro intrusions including the stock, apophyse and dykes, paleo-volcanic tectonics, cryptoexplosive breccias, and system of fault-fracture zone structure with multiperiod-superimposition. First, all of them are the ore-hosting structure patterns of the IOCG-type orebody. Secondly, the deep iron-copper orebody belongs to iron oxide copper-gold (IOCG) typewhich may be related to the alkaline dyke (apophyse) in the Baixila ore district. Finally, the locations of structure-hydrothermal fluid coupling with extensive fluid-rock reaction, resulting ore-bearing altered tectonic lithofacies zone, might be the brittle-ductile shear zone of thealkaline Ti-Fe-rich gabbro intrusions, hydrothermal breccia, and fault-fracture zone. The ore-hosted structure patterns of the IOCG-type orebody consist of the expansion of the alkaline Ti-Fe-rich gabbro intrusions, bottoms of the strolling part of the alkaline Ti-Fe-rich gabbro intrusions, the attitudes transformation part of <br> the alkaline Ti-Fe-rich gabbro intrusions, crypto-explosive breccias, and fault-fracture zone. Therefore, the signs of direct prediction for the IOCG deposits are the transient phase of the alkaline Ti-Fe-rich gabbro intrusions, the ore-bearing altered tectonic lithofacies zone and the lithofacies of ore-bearing crypto-explosive breccias enclosed the alkaline Ti-Fe-rich gabbro intrusions. It may be predicated that there is a large-size IOCG deposit at the depth of the Baixila area. There are two pinpoint targets in the Baixila area, one target is at the depth of Baixila ore district to Zhonglaolong ore district, and another is at the deep part of the north flanker of the Baixila to Yabaxia overturning anticline-fault zone. These gargets are higher in potential exploration for the large-size IOCG deposit in the future.