CAJ | 학술논문

料屯金矿是目前桂西北地区仅有的与石英斑岩空间上紧密相关的卡林型金矿，研究石英斑岩对成矿的指示意义，将有助于加深对该区卡林型金矿成因的认识，以期为该区找矿突破提供更多依据。通过对矿床地质特征和石英斑岩地球化学特征分析取得以下认识：石英斑岩属酸性岩类，钙碱性系列，具富钾、过铝质特征，属于重熔型岩浆岩；矿区成矿物质主要来源于三叠系地层，但不排除石英斑岩为金矿提供成矿物质的可能。野外地质特征和地球化学分析数据表明矿区至少存在2个阶段的成矿作用，在石英斑岩成岩前后都有成矿作用发生。石英斑岩在成岩后主要受构造剪切作用形成破碎裂隙带，后期含矿热液沿破碎裂隙带迁移并卸载成矿，使破碎裂隙带周围石英斑岩蚀变矿化，形成了矿化石英斑岩。国内外越来越多研究证据表明卡林型金矿的形成与岩浆活动有着密不可分的关系，矿区内燕山期石英斑岩的侵入可能与矿体形成有关，其为成矿作用提供成矿物质或成矿流体，还是只提供热源，需要进一步研究讨论。
료둔금광시목전계서북지구부유적여석영반암공간상긴밀상관적잡림형금광，연구석영반암대성광적지시의의，장유조우가심대해구잡림형금광성인적인식，이기위해구조광돌파제공경다의거。통과대광상지질특정화석영반암지구화학특정분석취득이하인식：석영반암속산성암류，개감성계렬，구부갑、과려질특정，속우중용형암장암；광구성광물질주요래원우삼첩계지층，단불배제석영반암위금광제공성광물질적가능。야외지질특정화지구화학분석수거표명광구지소존재2개계단적성광작용，재석영반암성암전후도유성광작용발생。석영반암재성암후주요수구조전절작용형성파쇄렬극대，후기함광열액연파쇄렬극대천이병사재성광，사파쇄렬극대주위석영반암식변광화，형성료광화석영반암。국내외월래월다연구증거표명잡림형금광적형성여암장활동유착밀불가분적관계，광구내연산기석영반암적침입가능여광체형성유관，기위성광작용제공성광물질혹성광류체，환시지제공열원，수요진일보연구토론。
The Liaotun gold deposit,located in northwestern Guangxi,is the only gold deposit spatially closely related to quartz porphyry.The metallogenic significance study for quartz porphyry will be helpful in the recogni-tion of the genesis of Carlin type gold deposit in this district,and will provide more basis on further prospecting. Based on the geological characteristics of the deposit and geochemical characteristics of quartz porphyry,the pa-per regards that the quartz porphyry rocks belong to acid rocks and calc-alkaline series,which have a feature of rich K and full Al,and belong to the remelting magmatite.The ore-forming materials may mainly derive from clastic rocks of Middle Triassic series,but we can not exclude the probability that the ore-forming materials de-rive from quartz porphyry.The geological characteristics of the field and the analysis data of geochemical indi-cate that there are at least two stages of mineralization in the ore field,and that the mineralization occurs before or after the diagenesis of quartz porphyry.Fracture zone were formed by structural shearing.The later ore ther-mal fluid transport,unload,and mineralize along the fracture zone;the alteration and the metallization occurs in quartz porphyry around the fracture zone,forming the mineralized quartz porphyry.Both in our country and abroad,there is growing evidence that the formation of Carlin type gold deposits are associated with the activities of the magma.In this district,the mineralization is probably related to the invasion of quartz porphyry in Yan-shanian;and it provides the ore-forming material,fluid,or heat source.These questions need further study and discussion.