CAJ | 학술논문

马头矿区复式花岗岩体发育于江南过渡带池州段，主要由花岗闪长(斑)岩和钾长花岗岩组成，与该地区铜钼等多金属矿化有着密切的联系。花岗闪长(斑)岩表现出类似埃达克质岩的地球化学特征，富集 LILE(尤其是Sr和Ba)和LREE，Eu负异常不显著，相对亏损HREE和Y，被认为是富集岩石圈地幔部分熔融的产物，在成岩过程中也有一定程度的地壳组分混染。钾长花岗岩则表现出高硅、高钾的地球化学特征，其锆石饱和温度(近液相线温度)接近于低共熔花岗岩，很可能是早期形成岩体在压力释放过程中再次熔融的产物。综合来看，在马头矿区，铜钼(金)等亲硫成矿元素的物质来源很可能与花岗闪长(斑)岩的侵位有关，但钾长花岗岩在钼的富集和强烈矿化过程中起到了催化媒介的作用。
마두광구복식화강암체발육우강남과도대지주단，주요유화강섬장(반)암화갑장화강암조성，여해지구동목등다금속광화유착밀절적련계。화강섬장(반)암표현출유사애체극질암적지구화학특정，부집 LILE(우기시Sr화Ba)화LREE，Eu부이상불현저，상대우손HREE화Y，피인위시부집암석권지만부분용융적산물，재성암과정중야유일정정도적지각조분혼염。갑장화강암칙표현출고규、고갑적지구화학특정，기고석포화온도(근액상선온도)접근우저공용화강암，흔가능시조기형성암체재압력석방과정중재차용융적산물。종합래간，재마두광구，동목(금)등친류성광원소적물질래원흔가능여화강섬장(반)암적침위유관，단갑장화강암재목적부집화강렬광화과정중기도료최화매개적작용。
Matou compound granites occurr in the Chizhou segment of Jiangnan transitional zone, consist mainly of granodiorite-porphyry and moyite, and are closely related to the Cu-Mo polymetallic mineralization in this area. The granodiorite-porphyry has high LILEs (especially Sr and Ba) and LREEs, and low HREEs and Y contents and insignificant negative Eu anomalies, similar to the adakitic rocks. It is identified that the product is derived from the partial melting of enriched lithospheric mantle, and also contaminates some crustal components in its diagenetic processes. The moyite is characterized by high silica and high potassium, and its zircon saturation temperature is close to that of eutectic granite. It may be the product of the partial melting of the pre-exist granites during the depressurizing. In Matou Cu-Mo polymetallic orefield, the materials source of the sulfur ore-forming elements, such as Cu, Au and Mo, is probably related to that of the emplaced granodiorite-porphyry, and the moyite plays a catalytic role in the molybdenum concentration and intensive mineralization.