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1994 Vol.3 Issue.1,
Published 1994-03-31
1
PRIMARY STUDY ON PETROCHEMICAL CHARACTER OF THE GOLD BEARING GRANITES OF PHANEROZOIC EON,CHINA
Li Zhitong
The gold deposits occurred in granites play a important part in the construction of goldresotirces in china,and is a special type of the gold deposits.The gold-bearing granites weremostly formed in Yanshan period,secondly in Variscan-Indosinian and Caledonian peri-ods.The gold-bearing granites widespreadlly distributed in the Shandong terrain of the eastmargin of Sino-korea plate.North margin of Sino-Korea plate,the continental crust-ac-cretion areas of north China and Yanzhi plate of south China.Study shows,the gold-bearinggranites can be dividec Ⅰ-type,A-type and S-type,mostly is Ⅰ-type.The gold-abun-dance of the gold-bearing granites are higher than graniteswhich don' tbear gold in thesame place.
1994 Vol. 3 (1): 1-20 [
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] (
28
) [
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21
STUDY ON GENESIS OF WULONG GOLD DEPOSIT IN LIAONING PROVINCE
Peng Yandong
Wulong gold deposit is a large scale gold lodes.The gold mineralization is close relatedto the Yanshanian period tecto-magmatisms.Geological,Petrochemical,geochemical andisotopic characteristics have been studied and indicate that Sanguliu intrusion、dikes and goldmineralization were the products of remelting of old gold-bearing source beds.They comefrom the same deep-seated magama chamber.Wulong gold deposit belongs to remelted mag-matic hydrothermal gold deposit.
1994 Vol. 3 (1): 21-31 [
Abstract
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26
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770KB] (
237
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32
THE FAULT CONTROLLING ACTIONS ON THE GOLD DEPOSITS IN YUNKAI AREA
Chen Shuwang
The fault controlled the forming of the gold deposits in Yunkai area,mainly shows asfollow: one is the fault zone,the macro-fault and the secondary fault contrelled the occur-rences of the gold mineralization,gold deposits(ore spots)and the ore-bodies respectivelyin the zone.The other is the mechanical property,stage and strength of the fault,they con-trolled or influenced the ore texture,the mineralization stage and the mineralization intensityect.In addition,the author study on ore-control mechanism of the fault.
1994 Vol. 3 (1): 32-37 [
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31
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529KB] (
225
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38
CLASSIFICATION OF THE SILVER MINERALIZATION SERIES AND THEIR RELATION TO TECTONIC EVOLUTION IN HUNAN PROVINCE
HeJianze
Based on geological and geochamical analyses and according to the main geological pro-cess during the formation of deposits,the silver and silver associated deposits in Hunanprovince may be classified into two mineralization series. They are one related with intrusionof magma and other with sedimentation-diagenesis.Both the two series further includethree subseries. This classification is very helpful to prognosis of silver deposits.In this pa-per,the main geological characteristics and the distribution of the two mineralization seriesare discussed in detail,and then,an aiialysis on relation of the two mineralization series withtectoniC evolution is made.
1994 Vol. 3 (1): 38-43 [
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36
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553KB] (
211
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44
A STATISTICAL DELINEATION OF GOLD PROSPECTIVE AREAS OF BAYUAN KEGION,SHANXI
Zhang Zhenfei, Wei Heming, Wei Gangfeng
Bayuan region,shaanxi Provhce,is the southwest portion of the Xiaoqiding gold metal-logenic belt.Over the last several years 31 gold ore deposits and occurrences have been dis-covered in this region,In light of mainly indirect criteria,this paper makes an evaItiation and classification of the mineralization quality of the occurrences.Based on this,with 16 geologicvariables taken into account,the paper contructs variation sequences of ore-forming meritsof the cells and delineates gold prospective areas of various grades;The methods of ftizzy syn-thetical judgement and logic-informational analysis are employed.
1994 Vol. 3 (1): 44-52 [
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21
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169
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53
DISCUSSION ON THE RELATIONSHIP BETWEEN THE EVOLUTION OF DONGGOU COASTAL PLAIN AND PLACER GOLD IN LIAONING PROVINCE
Liu Guohai, Zhuang Dehou
After late Cretaceous, Liaodong peninsula was elevated and denudated,and gradually peneplaned.Since late Holocene,repeated transgressions and regressions have resulted in some intermittent coastal plains along Yellow Sea,Among them,the Donggou coastal plain is the best peneplaned with well developed Quarternary deposits of large thickness and the best mineralization condition of placer gold.
1994 Vol. 3 (1): 53-58 [
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31
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177
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59
A TYPE OF IMPORTANT GOLD DEPOSIT——TELLURIDES
Zhang Zhaochong, Li Zhaonai
The gold telluride deposit is a type of weak resrarch in the epithermal gold deposits.The geological background, geological and geochemical characteristics of the gold telluride deposits,and their disteibutive characteristics of time and space in the world are synthesized and summarized.It is also pointed out that some important problems of this type of gold deposit should be solved and that the Te-geocemical anomaly is a valuable geochemical indicator of prospecting for these deposits.
1994 Vol. 3 (1): 59-64 [
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33
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258
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65
RECENT DEVELOPMENT OF THE STUDY OF PHYSICO-CHEMICAL CONDITIONS DURING GOLD MINERALIZATION
Dai Shibing, Liu Liandeng
The paper shows the means that G. priedrich and other economic geologists explain the sources and precipitation conditions of gold-bearing solution according to the studys on mineragraphy, alteration petrography, fluid inclusions and sulfide phases. The paragenetic studies of the gold occurrences document the stages of mineralization. Based on the fluid inclusions and mineral assemblages in ores, the temperatures and the pH value ranges of the stages can be identified. By using of loga (O
2
)-pH and loga (S
2
)-loga (O
2
) diagrams the physicochemical conditions of gold mineralization can be detuced. Based on the study Rodalquilar gold deposit Spain, they proposed that gold in epithermal gold deposits has been transported as Au(HS)
-1
by fluids of moderate pH and reducing properties. The reason for gold precipitation in the near surface environment must have a rapid decrease in pH and total sulfur activity and an increases in oxygen activity.
1994 Vol. 3 (1): 65-73 [
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22
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692KB] (
153
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74
1994 Vol. 3 (1): 74-79 [
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8
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388KB] (
158
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80
1994 Vol. 3 (1): 80-80 [
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20
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144KB] (
168
)
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