石英脉

Mineralization consists of galena, sphalerite, pyrite, and minor chalcopyrite, tetrahedrite and argentite in a gangue of mainly quartz and clay minerals.

矿化包含方铅矿、闪锌矿、黄铁矿、次生黄铜矿、及主要物质为石英和粘土矿物脉石内的黝铜矿和辉银矿。

It was proved in production and by experiments that tripoli could be used for making various glasswares.

生产试验表明，用粉石英代替脉石英熔制玻璃是可行的。

The measurement methods of WK include the way of veins and fibers,the rotated porphyroblast approach,the method based on the relation between quartz C axis fabrics and strain ratio,the method based on the relation between oblique grain shape and quartz C axis fabrics,and the method of ultimate Mohr circle.

文章介绍了涡度的具体测量方法，即张裂脉中纤维法、旋转残斑法、石英C轴组构与主应变比值的方法、石英C轴组构与斜列颗粒形态的方法等。

The nonmetal resources mainly distribute in North Mountain of Gaotai County, among them, 460,380,000 tons of nonmetal mines are availabile to production of industrial silicon , the silicon ore (including: quartzite, quartz sandstone and gangue) has high-grade of 98.67-99.04%, which provides rich raw materials for the production of monocrystal silicon and spathic silicon .

建设条件：高台县境内非金属矿资源主要分布在北山等地，其中可用来制作工业硅的非金属矿资源总储量就达到46038万吨，硅石(包括：石英岩、石英砂岩和脉石英)品位在98.67-99.04%之间，发展单晶硅、多晶硅产品提供了较好的条件。

Veined,stockwork and alteration-sheathed gold ores have been found in the area,belonging to four genetic types:the volcanic hydrothermal ores related to early—middle Carboniferous volcanism; subvolcanic hydrothermal ores related to intermediate—acidic porphyry intrusions; hydrothermal ores to the granitic intrusion and dynamo- hydrothermal ores related to regional dynamic metamorphism along the faults.

矿石类型有含金石英大脉型、石英网脉型和蚀变岩型。矿床成因类型有4种：一为火山热液型，其成因与区内早—中石炭世火山作用有关；二为潜火山热液型，与中酸性斑岩体侵位有关；三为岩浆热液型，与花岗质岩浆的侵位有关；四为动力变质热液型，沿断裂带分布于蚀变玄武岩中，系区域动力变质作用的产物。

Gold occurs mainly in pyrite-sericite-quartz rocks and pyrite±polymetallic-sulphides+quartz±carbonate veins and stockworks, forming veinlet-disseminated ores.

金主要产于黄铁绢英岩和黄铁矿±多金属硫化物+石英±碳酸盐脉-细网脉中，构成细脉-浸染状矿石。

The ore-control structure can be divided into two types which are transtension fracture and transpression fracture. The former controls quartz vein ore, and the latter controls altered rock ore.

控矿构造可分为两种类型，既压扭性和张扭性，前者控制着蚀变岩型矿体分布，后者则控制着含金石英脉型矿体分布。

The species and abundance of metal minerals increasing from SE to NW in horizon, corresponding transformation from sulfide altering orebody type to quartz vein orebody type.

同时在矿田水平方向上，由于SE→NW金属矿物的种类和含量呈增加的趋势，由少硫化物蚀变岩型向多金属硫化物石英脉型变化。

P72 Formation process of roddings: B type lineation is formed by the fold rolling of the thin-bedded vein quartzite or quartzite intercalated in the rocks.

Q 0 10cm 2。杆状构造形成过程：B型线理，由岩层中夹薄层脉石英或石英经褶皱的辗滚作用而形成。

Furthermore, the rock-forming and ore-forming process of the deposit is featured by multi-stage and multi-phase superimposing, and the process of ore-forming is coupling with the process of rock-forming.

今后的深部找矿工作尤其是杨梅岭矿段深部应该注意寻找两个时期分别形成的石英脉型和矽卡岩型矿体。

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。