x
uploads/epithermal.jpg

epithermal adj.【原子能】超熱的;【地質學;地理學】淺成熱液的。

epithermal neutron

Through field investigation , microscopic study , x - ray phase analysis and mineral infrared spectrum analysis , the authors determine the laumontitization had occurred widely in the axi gold field . according to the development of laumontitization and its relationship to mineralization , authors reveal that the laumontitization appeared mainly at the top and periphery to ore - bodies . it befallen at the edge of the geothermal fluid system or happened in the late stage of geothermal fluid system evolution , hence can be assigned as an indicator to prospect for epithermal gold deposit . the fluid causing laumontitization in the axi gold deposit is similar to those causing hot spring type gold deposit or in modern geothermal field . the fluidization of the axi gold deposit happened in carboniferous , showing the west tianshan is a good district for epithermal gold mineralization and preservation . so west tianshan is prospecting for exploring epithermal gold deposit 通過野外考察顯微鏡下薄片鑒定x射線物相分析和礦物紅外光譜等研究,確定了阿希金礦濁沸石化的普遍存在根據濁沸石化發生的規律及其與礦床形成的關系,確定濁沸石化主要見于礦體的上部和外圍,發育在地熱流體系統的邊緣和演化晚期,可作為尋找淺成低溫熱液型金礦的標志之一。導致阿希金礦濁沸石化的流體性質與熱泉型金礦成礦流體和現代地熱田類似,流體作用發生在石炭紀,證明西天山地區具有良好的淺成低溫熱液型金礦的形成和保存環境,因此找礦前景較好。

Finally , the fluid inclusion characteristics of yinshan deposit is compared with the typical fluid - inclusion characteristics in ore formation model of porphyry copper deposit . the ore - forming fluid of yinshan deposit share certain similarities in the evolution of ore - forming fluids with porphyry copper deposits , which indicates a genetic link between the yinshan polymetallic ore deposit and porphyry copper deposit in the depth of the deposit . it is concluded that yinshan deposit is refereed to “ transitional deposit “ between the porphyry copper deposits and epithermal deposits 最后,將銀山礦床流體包裹體特征與sillitoe提出的斑巖銅礦成礦模式進行對比得出,銀山礦床的成礦流體與斑巖銅礦的成礦流體具有特征的相似性和成礦演化的繼承性,認為它是一個聯結深部斑巖銅礦和淺部淺成熱液礦床的“過渡型礦床” ,礦床深部可能隱伏有斑巖銅礦床。

The mineralization theories related to the continued resources exploration of the crisis mines include : the model of golden deposits in greenstone belts ; the superimposed model of epithermal deposits and porphyry deposits ; the prospecting model of superfine dip gold deposit in deep ; prospecting model of copper and nickel sulfides in deep ; the associated model of lead , zinc and gold 與危機礦山接替資源找礦勘查有關的成礦理論包括:綠巖帶金礦新模式,淺成熱液和斑巖銅礦的套疊模式,微細浸染型金礦深部找礦模式,銅鎳硫化物深部找礦模式,金和鉛鋅礦共伴生模式等。

The ore - forming material is mostly from volcanic rock , and sub volcanic rock provides the main thermal and some mineral materials . the ore - forming fluid is from meteoric water . as a result , it should be a kind of adularia - sericite type of epithermal gold deposit 成礦物質主要來自礦區火山巖圍巖,次火山巖提供了主要熱源和部分礦源,成礦流體來自大氣降水,礦床成因類型為低硫化物冰長石?絹云母型淺成低溫熱液型金礦。

The study of the regional geological setting , occurence mode of ore body , ore rocks , and orecontrolling factors of shiyintan gold deposit indicates that it is an epithermal volcanic hydrothermal gold deposit 摘要通過對石英灘金礦床區域地質背景、礦體產出形態、礦石特征、成礦控制因素的研究,認為礦床成因類型應屬淺成低溫火山熱液型金礦床。

In this article , the current status of epithermal neutron beams in the world is reviewed and also the design and construction plan of the epithermal neutron beam at the tsing hua open - pool reactor is reported 本文將介紹世界各國在設計建造超熱中子照射管之現況,以及目前在國內清華水池式反應器建造超熱中子照射管之進展及計劃。

In recent years , study of boron neutron capture therapy has been aimed at the establishment of epithermal neutron beams in order to avoid the open - skull surgury and for the treatment of deep - seated tumors 摘要近年來,硼中子捕捉治療之研究傾向于采用超熱中子束以避免切開頭蓋骨之手術及進行較深層之腫瘤治療。

Both the metallogenic pressure and temperature are relatively lower , and the genetic classification of the ore deposit is epithermal deposit 成礦的溫度和壓力都比較低,礦床的成因類型為淺成低溫熱液礦床。

The axi gold deposit ; laumontitization ; epithermal gold deposit ; geothermal fluid minerogenetic system ; west tianshan 阿希金礦濁沸石化淺成低溫熱液型金礦地熱流體成礦系統西天山

The geochemical characteristics and ore - forming model of the epithermal gold deposit in west tianshan mountains 西天山地區淺成低溫熱液型金礦地質特征及成礦模式

Epithermal au - ag polymetallic deposit in western sichuan province 南角河銀多金屬礦床的垂直分帶特征

The characteristics , distribution and prospect of epithermal gold deposits 分布和找礦前景