矽石

Data of major andminor elements in magnetite, cassiterite, galena and sphalerite from oredeposits within this ore belt suggest that these ore deposits are of skarn,hydrothermal, porphyry and greisen types related to Yanshanian magmaticactivity and that iron in ores came from regional Permian marine interme-diate-basic volcanic rocks whereas partial lead and zinc from Permian geo-synclinic sediments.

矿带中各矿床的磁铁矿、锡石、方铅矿、闪锌矿的主元素和微量元素数据表明，这些矿床是属与燕山期岩浆活动有关的矽卡岩型、热液型、斑岩型和云英岩型矿床；其成矿金属组分中的铁来源于区域晚古生代海相中-基性火山岩，部分铅锌来源于区域二叠纪地槽沉积物。

The compositional features of garnets, high TiO2 (about 2wt%) in biotite and sillimanite occurs in the mylonite suggest a high temperature environment ofthe shearing.

石榴石微区成分变化、黑云母中高TiO_2含量(约2wt％)和矽线石相变质作用均说明韧性剪切带的形成温度较高。

The major auriferous veins of Jizhao gold deposit occur in the compressive break belt of aft EW-extending fold axis.The host rocks are sillimanite biothe-schist and dimicaceous schist of the second Member,Dashiqiao Formation.

鸡爪金矿主要金矿脉赋存在近东西向的褶皱轴部的挤压破碎带中，容矿岩石为大石桥组二段矽线黑云片岩、二云片岩，围岩蚀变为硅化、钾长石化、黄铁矿化。

The selective depressive mechanism of (NH4)2 SiF6 for aegirine in flotation was also primitively discussed by zeta potential tests, measuring adsorption amount of sodium oleate on the mineral surface, and analyzing infrared spectrum.

通过对矿物表面ζ电位与油酸钠吸附量的测定以及红外光谱分析，初步讨论了氟矽酸铵对霓石选择性抑制作用的机理。

Occurring commonly in lead-zinc pyrite orebodies and near-ore skarn, it is associated with spessartine, pyrite and alabandite.

在对辽宁建昌县八家子矿区吴家屯铅锌黄铁矿－硫锰矿矿床进行研究的过程中，首次发现三斜锰辉石，它与锰铝榴石、硫锰矿、黄铁矿等共生，主要产出在铅锌黄铁矿体、硫锰矿体和近矿矽卡岩中。

A fine, compact, usually white claylike mineral of hydrous magnesium silicate, H4Mg2Si3O10, found in the Mediterranean area and used in fashioning tobacco pipes and as a building stone.

海泡石氢氧化镁的矽酸盐矿石，通常为优质致密的白色陶土状物，H4Mg2Si3O10，产于地中海地区，用来制作烟斗和建筑用石

The gold deposit types are com plicated,can be divided into five types;hydrothermal breccia gold deposit,similar beded disseminated gold deposit in limestone,old karst cave gold deposit,porphyry gold deposit and skarn gold deposit.The form of these gold deposits are related to Tongshi subvoleanie complex.

该区金矿形戚与铜石次火山杂岩体有关，区内金矿类型复杂，可划分为隐爆角砾岩带型金矿、似层状畏染状灰岩中金矿、古溶洞型金矿、斑岩型金矿、矽卡岩型金矿等5种矿化类型。

Readers can glean new insights into the obsidian of the Black Rock sites, jasper at Hell's Backbone, petrified wood at Bullfrog Turnoff, and fossils of sea lilies along the Wasatch Range.

读者可以搜集到的新见解黑曜石黑岩遗址，碧玉在地狱的骨干，在牛蛙矽化木关机，和海百合化石沿著Wasatch范围。

The plugs can be manufactured from any material, though the most common components are wood, metal, bone, acrylic glass, horn, stone, silicone or glass.

插头可以制造任何材料，但最常见的组件是木材，金属，骨，亚克力玻璃，角，石，矽或玻璃。

The copper-bearing sulfide horizon of the Qinglongtan deposit underwent not only intense structural reformation but also superimposition of skarn-type mineralization after the formation of massive sulfide ores.

文章综述了柴北缘地区的VHMS型Cu-S矿床－青龙滩式矿床，指出其容矿岩石为加里东造山带中被改造过的岛弧火山岩，该矿床中含铜硫化物矿层形成后不但遭受过构造的强烈改造，而且也受后期矽卡岩化的改造和叠加。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。