黄铁矿化

This model indicates that the sulfur isotopes, whose values tend to be negative fractionate to a large scale because of the reductive process of dissimilating bacteria of sulfate.

根据内蒙古乌达矿区高硫煤9煤层（有机硫同位素值 d 34 S=－12.3‰~5.8‰，黄铁矿硫同位素值 d 34 S=－18.7‰~1.1‰）和低硫煤13煤层（有机硫同位素值 d 34 S 为8.9‰~ 11.5‰，黄铁矿硫同位素值 d 34 S 为8.3‰~ 9.7‰）剖面上有机硫和黄铁矿硫同位素的组成，结合煤岩学特征的综合分析以及黄铁矿化菌落和蓝藻胶壳的发现，提出了高硫煤中硫的演化模式，认为高硫煤中硫的同位素由于硫酸盐的异化细菌还原作用导致硫同位素大规模分馏，使之趋于负值。

According to gold deposit minerogenetic process,there are many kinds of altered mineral associated silicolites,pyrites and multiple metal sulfides.

根据金矿床成矿过程中有各类蚀变体—硅化体、黄铁矿化和多金属硫化物伴生，针对测区存在覆盖层厚和高压线密集的客观环境，勘查金矿时选择CSAMT和TDIP单极-偶极测深进行构造及硫化物空间位置的圈定，在勘探区应用地球物理方法取得了较好地质效果。

Rare elements and REE are mainly enriched in gray-black trachyte and less in other rocks. In addition, schistosity, pyritization, silicification and carbonation in gray-black trachyte are contributed to enrich rare element and REE. It is suggested that alkaline rocks in Hongyang area have the characteristics of subvocanics, and alkaline rocks in Hongyang and Miaoya areas all came from upper mantle and mixed with some substances of crust. Intrusion of alkaline rocks is related to the occurrence, development and evolvement of the deep rupture zone in the areas.

稀土、稀有元素主要富集于灰黑色粗面岩中，而在其他岩石类型中相对较少，同时岩石的片理化、黄铁矿化、硅化和碳酸盐化对稀土、稀有元素有进一步的富集作用；提出了本区的碱性岩组合具有次火山岩相的特征，讨论了本区碱性岩的成因，认为其与湖北庙垭地区的碱性岩可能均来自上地幔，并不同程度地混染了大陆壳的物质成分，其形成时代与断裂构造带的发生、发展和演化基本同步。

The relationship of ore-forming fluid salinity-aqueous cation lg demonstrated that water-rock reaction was also one of the potential gold deposition mechanisms besides mixing with meteoric water. All of these were consistent with that sericitization and pyritization hydrothermal alteration were extensively/intensively distributed (as high as 33%), gold grade linearly correlated with degree of alteration,∑REE depletion and δ〓O enrichment

成矿流体盐度-液相主要阳离子组分1g演化规律研究表明，除与大气降水的混合-稀释外，水-岩相互作用也可能是造成金沉淀的重要因素，这与本文所研究金矿床中绢云母化、黄铁矿化等热液蚀变广泛发育(可高达33％)，Au品位与热液蚀变程度、REE亏损量及δ〓O富集规模表现出较为明显的线性关系等一系列地质事实相吻合

It occurs in granodioritic porphyre and granitic porphyre and the spatial distribution of the jade veins are controlled by lithology. The raw jade is in multi-colors with scaly blastic and massive textures under microscope. Wallrock alteration is developed and characterized by zoning as sericitization, kaolinization and pyritization.

玉石矿脉的空间分布受岩性控制，赋存于花岗闪长斑岩或花岗斑岩中；玉石原石色彩多样，岩石以显微鳞片变晶结构和块状构造为主；矿区围岩蚀变发育，具有绢云母化、高岭土化和黄铁矿化的蚀变分带现象。

Calculations based on Grosens'component-volume equation show that,wit the intensification of mylonitization,increasing amounts of SiO_2 and FeO are brought in,which is geologically expressed as intensified silicification and pyritization.

根据Gresens的成分－体积关系式所获得的计算结果表明：SiO＿2、FeO随着糜棱岩化程度加强而带入量增加，在地质上表现为硅化、黄铁矿化加强

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。

Organic pollution may cause dissolution and pyrite-stain of foraminiferal test. This can be attributed to the acid and reductive condition formed by over high organic content.

有机质污染在有孔虫特征上主要反映为壳体的溶蚀和黄铁矿化，这是由于过量的有机质导致介质的酸化和还原条件。

Studies on rock and ore micro fabric that control mineral preservation stratum of the deposit,and the siliconization and pyritization contacted with gold mine origin reflects the characteristic of syndepositiondiagenesis,which indicates the sediment-diagenesis and later stage mild reconstructive genetic mechanism of Shuiyindong gold deposit.

黔西南水银洞金矿是一特大型富金矿床，矿体成群多层、顺层产于龙潭组地层中，通过系统研究水银洞金矿赋矿地层岩石及矿石的显微组构特征，以及与金矿成因联系密切的硅化及黄铁矿化特征，均显示为同沉积—成岩特征，共同指示水银洞金矿沉积—成岩后期轻微改造的成因机制。

The Yiarmand gold deposit occurs in hydrothermally eruptive breccia of the 2nd Member of Lower Carboniferous Dahalajunshan Formation and its underlying arsenopyritized and pyritized tuffaceous clastic rocks,and the ore forming process can be divided into hydrothermally eruptive and sedimentary stage and metasomatic stage.

伊尔曼德金矿床赋存于下石炭统大哈拉军山组第二岩性段硅化热液喷发角砾岩及其下伏上泥盆统吐呼拉苏组毒砂黄铁矿化凝灰质碎屑岩中，成矿作用可分为热液喷发沉积期和热液交代蚀变成矿期。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。