蚀变岩石

利用GIS评价模型处理ASTER遥感解译的蚀变岩石信息，可以得到精确的遥感异常，从而指导找矿勘查工作。

The GIS evaluation model may be used to process altered rock information interpreted by ASTER , which may produce accurate remote sensing anomalies and guide mineral exploration .

波谱识别蚀变岩石研究初步结果

Preliminary Results of Altered Rock Identification Based upon Spectral Characteristics

对研究区的蚀变岩石光谱进行了分析，特别分析了其对应ASTER各波段的反射或吸收特征。

In particular , we analyses the reflectance or absorption characteristics of the spectra in each band of the ASTER image .

通过对未蚀变岩石、近矿蚀变围岩及矿区内产出的黄铁矿中微量元素的分析对比，指出本区最佳指示元素是Au、Cu、Bi、Pb、Mo、As；

On the basis of comparison of trace elements in unaltered rocks , altered country rocks close to ores and pyrites occured in the mining area , it is indicated that the best indicating elements are Au , Cu , Bi , Pb , Mo , As in the area .

这是由于热液蚀变岩石具有较高的抗风化力的缘故。

This is due to the higher weathering resistance of hydrothermally altered rock .

蚀变岩石和矿物光谱的切比雪夫比值函数波形分析

The waveform analysis of Chebyshev ratio functions of the spectrum of altered minerals and rocks

研究了铜陵狮子山矿田岩浆岩及金矿床矿石和蚀变岩石的稀土元素地球化学特征。

The REE geochemical characteristics of magmatic rocks and gold deposits in Shizishan ore-field of Tongling were studied .

近矿蚀变岩石中存在石英、绢云母、白云母、钠长石和碳酸盐。

5 , There are quartz , sericite , muscovite , albite and carbonate in near - ore altered rocks .

蚀变岩石的δ￣（18）O在磺向上由围岩向矿脉逐渐升高。

The δ ~ ( 18 ) O val-ues of the altered rocks increase gradually from wall rocks to ore veins .

蚀变岩石的δ￣（18）O值由地表向深部逐渐降低。开展金矿的氮稳定同泣素研究，在国内尚数首次。

The δ ~ ( 18 ) O values of altered rock decrease gradually from the surface down to the deep .

蚀变岩石（指富含帘石、石英、缘泥石钙质砂岩）稀土总量较高。

The ∑ REE of the altered rocks ( i. e. , calcareous sandstone rich in epidote , quartz and chlorite ) is much higher .

研究了金城金矿床蚀变岩石的常量元素和微量元素、蚀变矿物的金含量和化学组成，并首次对铁碳酸盐化及煌斑岩杏仁体的组成进行了研究。

This paper studies the major elements and trace elements of altered rocks and the Au content and composition of altered minerals of Jincheng gold deposit and first studied the Fe-carbonate and the amygdale in lamprophyre in this deposit .

对于大冶铁矿内接触带钠化蚀变的岩石特征、钠质来源、动力机制、形成机理等作了比较系统的阐述。

This paper systematically expounds rock characteristics , ore-forming process , natrium origin and natrium alteration mechanism in contacting zones of Daye iron deposit .

CO2，H2O，S和Au，Cu在各类蚀变-矿化岩石中均显富集；

CO 2 , H 2O S , Au and Cu are concentrated in the all altered and mineralized rocks mentioned above ;

对蚀变和矿化岩石化学组成的定量研究表明；

The chemical compositions of altered and mineralized rock s have been quantitatively studied .

研究表明，剪切带中矿化地段蚀变岩其岩石体积总是扩容的，非矿化地段糜棱岩在变形过程中体积是损失的。

The research results show that the petrological volume of altered rocks in metallogenic section from shear zone is almost always dilatant , while mylonite volume in non metallogenic section is almost always losing .

稀土元素研究结果反映石英脉是成矿流体的单纯产物，而蚀变岩和矿化岩石则是成矿流体与围岩物质的混合产物。

From the study of lanthanon , we know that quart-vein is the single production of hydro mineralization . etch rock and mineralized rock are the mix outcome of hydro mineralization and wall rock materials .

因此，必须通过单位晶胞体积校正，使蚀变交代后的岩石和原岩在等体积晶胞间进行对比，方能使计算结果更加符合实际，达到预期的效果。

A more useful and desired calculating result must be from the contrast of equal volume " cell " between the altered rocks and original rocks , so " unit cell " volume correcting is very necessary .

蚀变岩和矿石的δ18O明显高于未蚀变岩石，指示岩石在水岩作用过程中从流体中汲取18O。

The δ ~ ( 18 ) O values of ores and altered rocks are higher than those of unaltered rocks , suggesting that the rocks have extracted () ~ ( 18 ) O from fluids during fluid-rock interaction .

巴尔特计算法是一种用来研究岩石交代蚀变前后化学成分变化的常见方法，在蚀变岩石和蚀变矿床的研究中有较为广泛的应用。

Barth calculating method is a common one which is used for studying the chemical composition changes of rocks which will undergo metasomatism-alteration before and after . It is extensively applied to the study of altered rocks and minerals .

研究了热液围岩蚀变类型和蚀变条件以及蚀变类型与矿产种类的关系，说明蚀变岩石信息与金属矿床有较高的相关性。

Approved that the alterative rock information and metallic ore deposit has high relativity .