二长斑岩

矿区出露的二长斑岩脉单颗粒锆石U-Pb年龄为133.7Ma～131Ma，表明岩浆侵位时间发生在晚侏罗世&早白垩世，属燕山中晚期岩浆活动的产物，属成矿后侵位的岩浆岩。

The single zircon U-Pb of 133.7Ma ~ 131Ma for monzonite-porphyry in the orefield make clear that the magma was intruded after mineralization during Late Jurassic to Early Cretaceous Period .

石英二长斑岩侵入于前奥陶纪松多岩群和石炭-二叠系来姑组中，并被帕那组火山岩呈火山沉积不整合覆盖。

The quartz-monzonite porphyry intrusived in the Pre-Ordovician Songduo Group and Carboniferous-Permian Laigu Formation , unconformably covered by the volcanic rocks of Pana Formation .

该岩体主要由石英闪长玢岩、石英二长斑岩和花岗闪长斑岩组成，与铜矿化关系密切。

The intrusion mainly consists of quartz diorite porphyry , quartz monzonite porphyry and granodiorite porphyry , and has close relationship with the copper mineralization .

将与富碱斑岩有关的金矿床从斑岩类型角度划分为四种类型：与二长斑岩有关的构造破碎带蚀变岩型金矿床；

Based on the different porphyries , the gold deposits related with porphyry can be divided into four types : ( 1 ) the alteration rock type gold deposit related to ivernite in the structural fractured zone ;

主要含矿角砾岩的RbSr同位素等时线年龄为191Ma，两期隐爆角砾岩之间侵入的二长花岗斑岩脉的等时线年龄为177Ma。

The Rb-Sr isochron age of early ore-bearing breccia is 191 Ma , and the age of monzonitic granite porphyry emplaced after the early breccia pipe is 177 Ma .

浙江桐庐自碎二长花岗斑岩的特征和成因

The characteristics and the origin of the autoclastic monzonitic granite-porphyry , Tonglu , Zhejiang

斑岩的主要岩石类型为花岗闪长斑岩、二长花岗斑岩、石英二长斑岩。

The main rock types of the porphyries are granodiorite-porphyry , monzonitic granite-porphyry and quartz monzonitic porphyry .

根据杂岩体相互之间的接触、穿插、包裹等关系，厘定他们形成的先后顺序为正长闪长岩、霓辉正长岩、石英二长岩、花岗斑岩、正长斑岩。

According to the complex interspersed 、 cutting 、 wrapping relations among all the complex , we can determine their order of formation which is syenodiorite to aegirine-syenite to quartz-monzonite to granite-porphyry to syenite porphyry .