角闪石岩

This paper deals emphatically with the genetic mineralogical characteristics of amphibole, an important rock-forming mineral extensively-distributed in ophiolites of Shangnan-Danfeng are...

本文着重论述了商丹地区蛇绿岩中广泛分布的主要造岩矿物之一，角闪石的主要特征组份、微量元素、晶胞参数、阳离子占位度等成因矿物学特点。

The petrogenesis of intrusive rocks is discussed in this paper according to the equilibrium of minerals. It is suggests that in the Shigujian pluton, the designations of plagioclases are 15 - 25, the plagioclases are all oligoclase; the biotites are Mg-biotites, and most of the amphiboles are edenitic amphiboles or edenite; paragenetic ...

结果表明：（1）石鼓尖侵入岩中，斜长石成分较稳定，共生角门石和黑云母为岩浆平衡结晶的矿物；（2）天堂寨和九资河侵入岩中，部分斜长石和黑云母可能为熔蚀残留矿物，角闪石属于火成岩区的新生矿物，可能为斜长石和黑云母发生熔融反应所形成；（3）三个侵入体的岩石均为岩浆成因。

The results show that the formation of granulite have two stages: early granulite-facies rocks formed under the conditions of 0.88~1.1GPa and 880~890℃; the later amphibole-facies retrogressive metamorphism paragenesis formed under the conditions of 0.30~0.37GPa and 620~640℃, belonging to a typical low-pressure type.

结果表明：麻粒岩形成经过两个阶段，麻粒岩形成于0.88~1.17GPa，880~890℃条件下，角闪石－斜长石退变组合形成温度620~640℃，压力0.30~0.37GPa。

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。

On the basis of a study and elaboration of data, some important conclusions are presented:(1) ruby deposits in marbles occur in the plutonic metamorphic zones of orogens where deep fault structure is developed;(2) ruby-bearing rocks are calcic crystalline marbles, rather than magnesian marbles;(3) amphiboles in ruby-bearing rocks are not tremolites, but silica-poor, alumina-rich and chrome-bearing calcic amphiboles, such as chrome-bearing magnesio-sadanagaites; and (4) the deposits are genetically of thermodynamical metamorphism type, rather than of pneumatolito-hydrothermal type or skarn type.

目前，对于与此类型矿床找矿相关的若干成因问题的认识，还相当模糊，主要表现在以下几方面：①对此类型矿床的产出构造背景认识不清；②认为含矿岩石为镁质大理岩或镁质夕卡岩；③认为含矿岩石中与红宝石共生的角闪石为透闪石；④认为此类矿床的成因类型为"气成一热液型"或"夕卡岩型"。本文在实际研究(王礼胜，1996)和文献资料整理的基础上，分别对这些问题给予了澄

According to logging results of 167 boreholes and chemical analyses of 24 369 samples as well as characteristics of element distribution at 4 000 m, 3 950 m and 3 900 m levels, the deposit is characterized by alteration, mineralization and element geochemistry of the porphyry. Alteration and mineralization are spatially and temporally related to the augen quartz phenocryst_bearing hornblendequartz diorite porphyrite (J3δομ).

根据167个勘探钻孔编录和化学分析（24369件化学分析样品）资料，以及对海拔4000 m、3950 m、3900 m水平面的Cu、Au、Ag、Mo、Mn、P b、Zn、W、K、Na、Ca、Rb元素分布规律的分析，显示矿体具有斑岩型矿床的蚀变、矿化以及元素地球化学特征，主要矿化和围岩蚀变在时间上和空间上均与含眼球状石英斑晶的角闪石英闪长玢岩（J3δομ）有关。

According to logging results of 167 boreholes and chemical analyses of 24 369 samples as well as characteristics of element distribution at 4000 m, 3950 m and 3900 m levels, the deposit is characterized by alteration, mineralization and element geochemistry of the porphyry. Alteration and mineralization are spatially and temporally related to the augen quartz phenocryst-bearing hornblende-quartz diorite porphyrite (J3δομ).

根据167个勘探钻孔编录和化学分析（24369件化学分析样品）资料，以及对海拔4000m、3950m、3900m水平面的Cu、Au、Ag、Mo、Mn、Pb、Zn、W、K、Na、Ca、Rb元素分布规律的分析，显示矿体具有斑岩型矿床的蚀变、矿化以及元素地球化学特征，主要矿化和围岩蚀变在时间上和空间上均与含眼球状石英斑晶的角闪石英闪长玢岩(J3δομ)有关。

Two types of cumulate gabbros are exposed in Wulatezhongqi area, including amphibole gabbros and olive gabbros. The major petrogenetic minerals in the Wengeng gabbros are olive, pyroxene, plagioclase and hornblend.

乌拉特中旗温更地区由角闪辉长岩和橄榄辉长岩组成的混杂堆晶岩系，主要造岩矿物为橄榄石、辉石、斜长石及角闪石等。

This paper deals with the mineral chemistry of amphiboles and feldspars in the complex to demonstrate the temperature and pressure conditions of crystallization.

本文通过对刘家洼杂岩体角闪石、长石矿物化学的研究，揭示岩体形成时的温度为 73 0～ 81 0℃，而结晶压力变化于 6.6× 1 0 8～ 2 。2× 1 0 8Pa之间，表明在该岩体形成过程中，经历了明显的剥露作用。

On the basis of a study and elaboration of data, some important conclusions are presented:(1) ruby deposits in marbles occur in the plutonic metamorphic zones of orogens where deep fault structure is developed;(2) ruby-bearing rocks are calcic crystalline marbles, rather than magnesian marbles;(3) amphiboles in ruby-bearing rocks are not tremolites, but silica-poor, alumina-rich and chrome-bearing calcic amphiboles, such as chrome-bearing magnesio-sadanagaites; and (4) the deposits are genetically of thermodynamical metamorphism type, rather than of pneumatolito-hydrothermal type or skarn type.

目前，对于与此类型矿床找矿相关的若干成因问题的认识，还相当模糊，主要表现在以下几方面：①对此类型矿床的产出构造背景认识不清；②认为含矿岩石为镁质大理岩或镁质夕卡岩；③认为含矿岩石中与红宝石共生的角闪石为透闪石；④认为此类矿床的成因类型为&气成一热液型&或&夕卡岩型&。本文在实际研究(王礼胜，1996)和文献资料整理的基础上，分别对这些问题给予了澄

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐