石英脉

And therefore the Jinchang gold deposit can be classified as the catalog of mesothermal gold deposits which are related to post-magmatic hydrothermal activity of Mesozoic volcano-subvolcanic magmatism.

矿石中脉石英的Ar-Ar年龄测定结果(119.40～122.53Ma)，表明矿化作用发生于燕山中晚期，矿床成因为与中生代火山-次火山活动有关的岩浆期后浅成中温热液矿床。

The fine - grained crystalline base of porphyritic rock in which larger crystals are embedded.

岩石的外表呈现交织的石英及碳酸盐细脉组成的网格构造。

The mineralization-alteration in Shuangfengshan appears in downward succession of silica breccia zone, low grade gold-bearing silica rock zone, quartz stockwork zone, pyrite montmorillonite zone and propylitic alteration zone.

这两个成矿阶段同源同位的蚀变矿物晕叠套，造成双峰山矿床蚀变分带从上至下为隐爆矽质角砾岩化带、低金品位矽质岩带、石英网脉带、黄铁矿蒙脱石化带和青磐岩化带。

The minera lization_alteration in Shuangfengshan appears in downward succession of silica b reccia zone, low grade gold_bearing silica rock zone, quartz stockwork zone, pyrite montmorillonite zone and propylitic alteration zone.

这两个成矿阶段同源同位的蚀变矿物晕叠套，造成双峰山矿床蚀变分带从上至下为隐爆硅质角砾岩化带、低金品位硅质岩带、石英网脉带、黄铁矿蒙脱石化带和青磐岩化带。

Ore deposit, have been studied detailly; the orebody pattern (sedimental bedded ores combined with stringer ores of hydrothermal origin) is also outlined; four metallogenic epoches are devided; the zoning of mineralization (including zones of ores, elements, mineral assemblages and temperature of mineralization) have been depicted; the main types of wall-rock alteration are characterized as propylitization of basic rocks and pyritization-sericitization-silicification of acidic pyroclastic rocks; the origin of ores and seven kinds of main minerals have been studied; and the metamorphism and deformation of orebodies is thought mainly due to the shearing and the intrusion of subvolcanic rocks

研究了七个矿化带特别是I号矿床的矿床地质特征，描绘了矿体的双层结构(沉积矿石与热液充填交代的细网脉状矿石)，划分了四个成矿期次，区分了矿化分带(包括矿石组构的成因分带、元素分带、矿物组合分带、温度分带)，指出了围岩蚀变的主要特征是细碧岩青盘岩化而石英角斑质凝灰岩黄铁绢英岩化；对矿石及七种主要矿石矿物的成因作了研究；探讨了矿体的变质、变形，指出韧性剪切及次火山岩侵入的热力作用和应力作用是导致矿体变质变形的主要原因

Most of small intrusive bodies are stocks or dikes, and each of the dimension is less than 1km2 ; they are mostly granite-porphyry、porphyritic-granite、monzogranite,a small amouts of them are quartz diorite or diorite; the chemical characters are high content of SiO2、K2O and low content of Mg and CaO, on the SiO2-K2O diagram all the samples fall in the field of high-K calc-alkalic series and shoshonite series.

小岩体多呈岩株或脉状产出，出露面积多数在1km2以下；岩性主要为花岗斑岩、似斑状花岗岩、二长花岗岩，少量为石英闪长岩及闪长岩等；岩石化学成份以高硅、富碱、多钾、贫镁、少钙为特征，属高钾钙碱性系列或钾玄岩系列。

Rock faces commonly show a stockwork of intersecting quartz and carbonate veins.

岩石的外表呈现交织的石英及碳酸盐细脉组成的网格构造。

YAG laser with 1.06μm wavelength and undoped multimode step quartz fiber are used in experiment,and the cha...

实验上采用 1.0 6μm的YAG激光器和无掺杂多模阶跃石英光纤，测得了能量反射率和波形的变化规律，获得的最大反射率为 69%，脉宽压缩比为

The early magmatic rocks include quartz syenite porphyries , syenite porphyries , striking in near SN direction; the latter ones include biotite syenite porphyries , lamprophyres, striking in near EW direction.

详细讨论了北衙矿区的地质特征，通过对勘探资料的深入研究和野外观察，初步确定，北衙矿区存在两期岩浆活动，早期的石英正长斑岩、正长斑岩等近南北向分布，晚期的黑云正长斑岩、煌斑岩脉等呈近东西向展布。

Accompanying the Jungar plate subdueted dewnwards along the northwest edge of Siberian eraton, the volatile-rich felsie biotite diorite batholiths and a lot of fracture-controlled quartz diorite vein intruded the are-back basin, Au preferently distributed within the disseminated magmatic sulfide during granitoid melt crystallization

阶段Ⅰ。华力西晚期伴随着准噶尔板块向北部西伯利亚板块的强烈俯冲，在额尔齐斯弧后盆地形成偏中性富含挥发份深源黑云英闪侵入岩及大量明显受构造控制的石英闪长岩脉，Au在岩浆结晶-分异演化过程优先在花岗岩中呈浸染状分布的岩浆碱化物中相对富集

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。