脉石岩

Major conclutions from this study can be summarized as following:1. On mineralogy, rutiles, apatites, epidotes and vein minerals from UHPM rocks were firstly and systematically studied, by detailed petrography and mineral-chemistry investigation, some mineral or mineral assemblage with special composions or texture were firstly found in UHPM rocks from Sulu-Dabie, for example, corrudum, magnesite, high-Ti biotite and garnet were found as inclusions in rutiles from eclogites, Nb-Fe rutile and zoned Si-Y apatite were found in gneiss, epidote / allanite with euhedral zones like magmatic genesis were found in elogites and gneiss, a lot of minerals with high REE, HFSE, LILE and volatiles were found in veins of gneiss.

在矿物学方面，首次较为系统地研究了超高压变质岩中的金红石、磷灰石、绿帘石等副矿物，并通过详细的岩相学和矿物化学研究，首次在苏鲁-大别超高压变质岩中发现了一些具有特殊成分/结构的矿物或矿物组合，如在榴辉岩金红石中发现了刚玉、菱镁矿、高钛黑云母和石榴石矿物包裹体，在片麻岩中发现了Nb-Fe金红石和具有自形环带结构的高Si-Y磷灰石，在榴辉岩和片麻岩中发现了具有类似岩浆成因的自形生长环带结构的绿帘石/褐帘石，在片麻岩的脉体中发现了大量富含稀土元素REE、高场强元素HFSE(Nb、Ta、Zr、Ti)、大离子亲石元素LILE(K、Th、U、Sr、Ba)，以及挥发性组份(CO_2、F、P、S)的特殊矿物，丰富并提升了超高压变质岩的矿物学研究。2。

As cement, authigenic mineral or vein, dawsonite is found not only in marine dolomite and oil shale, but also in terrigenous fragmentary rock and coal measures.

片钠铝石作为胶结物、自生矿物或脉体，不仅分布在海相白云岩、油页岩中，而且还广泛分布在陆源碎屑岩及煤系地层中。

In this paper, the petrology, mineralogy and geochemistry of basic-ultrabasic volcanic rock, granite and skarn related to the Sn-Cu skarn-type ore and the vein-type ore in Laochang ore field have been researched systematically, some conclusions are summarized as follows:In Gejiu tin-polymetallic district, the middle Triassic volcanic rocks belonging to calc-alkaline basalt-tholeiite serie, mainly consist of pyroxene, hornblende, feldspar, chlorite and phlogopite; All the granites are peraluminous granites related to the Yanshanian collision-orogeny. Laoka granite closely related to the tin-polymetallic deposits emplaced in the post- orogenic.The metal elements show obviously vertical zones with the variety of skarn types in dimensional extension; The occurrence of garnet skarn and diopside skarn alternately developed in the horizontal zones of the contact between granite and carbonatite are mainly related to two factors: one factor is the infiltration metasomatism of post-magmatic hydrothermal solution, the another is the metrical strata of marble and calcic-dolomite developed in country rocks.

本文重点以老厂矿田中的接触带锡铜矿床和脉状矿床为研究对象，采用化学分析、ICP-MS、X射线粉晶衍射分析、电子探针等测试手段，对本区与成矿相关的基性-超基性火山岩、花岗岩、夕卡岩、电气石-石榴石等进行了系统的地质地球化学研究，研究表明：个旧矿区中三叠纪个旧组地层中的火山岩为钙碱性玄武岩-拉斑玄武岩系列，岩石为辉石-角闪石-长石-绿泥石-金云母组合；本区的花岗岩为过铝质花岗岩，主要与燕山期碰撞造山作用有关，锡多金属成矿与形成时代最晚、分异较好的花岗岩关系密切；本区夕卡岩中的有用共生组份随着夕卡岩类型及其矿物组合的不同具有明显的分带性。

The medium-pressure kyanite sequence metamorphic belt includes biotite zone, garnet zone, staurolite zone, kyanite zone, sillimanite zone and partial melting migmatites.

黑云母带为450-530℃、0.45-0.7GPa，石榴石带为550-570℃、0.55-0.75GPa，十字石带可能为602±15℃、0.67±0.16GPa，十字石带后期变质条件为515℃、0.4GPa，夕线石带为678.7℃、0.6±0.05GPa，混合岩中浅色脉体为750～800℃、0.9～1.0GPa。

The Pb isotopic compositions of the ores are similar to those of the syenite, as shown in the 207Pb/206Pb-208Pb/206Pb diagram, the ores, syenite, and Archean metamorphic rocks are linearly correlated and the ores are more closely related to the syenite than Archean metamorphic rocks do.

矿石铅同位素组成与正长岩杂岩体相似，在207Pb/206Pb-208Pb/206Pb图解上，矿石、正长岩、矿石中的钾长石脉石及太古宇桑干群变质岩呈线性分布，矿石与正长岩在铅同位素组成上更接近，而与太古宙变质岩有明显的区别。

Author discussed geological characters of vein rock and co-relation with auriferous mineralization, and indirectly concluded the relationship of auriferous ore and rock body.

从岩石学、石化学、量元素、位素等方面讨论了脉岩的地质特征及其与金矿化的关系，可间接推出金矿与岩体的关系。

Arsenopyrite, pyrite, chalcopyrite, marcasite, pyrrhotite, sphalerite, galena and boulangerite are the main metal minerals, while the gangue minerals are dominated by quartz, fluorite and calcite.

在野外调研基础上，对主要脉石矿物石英、萤石中流体包裹体进行了包裹体岩相学、显微测温分析和包裹体中气液相成分的LRM分析。

These dilatation veins are the ultramafic—mafic intrusive sheets in early stage, which occurred the strong boudinages and the shearing rotation forming θ、Φ、δtype porphyroclasts generally, as the series different size deformation zones; the features of the leucocratic felsic veins in middle stage; the pink granitoid veins in later stage, show a gneisses evolution process from the deep tectonic facies to the middle tectonic facies.

这些扩张脉体，早期阶段为超镁铁质—镁铁质侵入岩席，受后期构造改造岩席发生强烈石香肠化或受剪切发生旋转，呈θ、Φ、δ碎斑系，总体构成一系列规模不等的变形带；中期阶段以发育淡色长英质脉体为特征；晚期阶段为肉红色花岗质脉体，反映出片麻岩由深构造相向中浅构造相变化的过程。

It is found that there is a co-relationship between the boron isotope and chemical composition of magmatic tourmaline: the δ〓B value increases with increasing Al and Li in Y-site of tourmalines. The low δ〓B values (-41. 1～-39. 01‰) in Altay No. 3 pegmatite, which is one of the lowest values found by now, imply that non-marine evaporites might exist in magma source, or the pegmatitic magma had been assimilated by them during its intrusion and emplacement.

阿尔泰3号伟晶岩最初形成的结构带中电气石的B同位素组成是目前所发现的最低值之一(-41.11～-39.01‰)，指示形成伟晶岩脉的初始岩浆可能由含非海相蒸发岩的泥质岩经变质深熔作用形成，或是伟晶岩岩浆在上侵定位过程中同化了含非海相蒸发岩地层的结果。

Step-wise evaporation 207Pb-206Pb dating has been conducted for uni-genetic magmatic zircons from quartzofeldspathic gneiss and pegmatite, respectively, from Guandi complex, sporadically outcropped around Fangshan pluton in Zhoukoudian area, western Hills of Beijing.

北京西山周口店地区房山岩体周围关坻杂岩的长英片麻岩和伟晶岩脉具有类似简单岩浆结晶成因锆石的蒸发法Pb-Pb年龄。

They weren't aggressive, but I yelled and threw a rock in their direction to get them off the trail and away from me, just in case.

他们没有侵略性，但我大喊，并在他们的方向扔石头让他们过的线索，远离我，以防万一。

In slot 2 in your bag put wrapping paper, quantity does not matter in this case.

在你的书包里槽2把包装纸、数量无关紧要。