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  Semi-detailed geochemical gold exploration in the Qalejugh area, southwest Torbat-e Heydariyeh By: Soleyman Kosari; Alireza Karimi Bavandpour 1998 GSI Gold Exploration Program
Gold exploration in Qalejugh
Semi-detailed geochemical gold exploration in the Qalejugh area, southwest Torbat-e Heydariyeh
 
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   Semi-detailed geochemical gold exploration in the Qalejugh area, southwest Torbat-e Heydariyeh
  
   By: Soleyman Kosari; Alireza Karimi Bavandpour
  
   1998
  
   GSI
   Gold Exploration Program
  
   Abstract
   The gold exploration project in the Qalejugh area, is a subsidiary of Gold Exploration Program of GSI that started after the results of systematic geochemical survey in the 1:100000 sheet of Feizabad at 1996. The study area is 50 Km2 that contains anomalies of gold and associated elements such as As, Sb, Bi, Hg, Cu and so on. The area was introduced as a promising zone for gold potential.
   The available anomalies in the Qalejugh village are the continuation of Kuhzar gold mineralization in the Kashmar that is located tens of kilometer toward northwest of Qalejugh village. Because the many of tributaries that connect to the Qalejugh River contain strong gold anomalies, therefore the area was explored independent of Kuhzar.
   In this study, in addition to the geochemical exploration, geological mapping was done the scale 1:20000 that is presented in two other reports. The current report includes two volumes that are about field works, data and interpretations (I); analysis, diagrams and maps (II). The main previous studies in the area include geological map of Feizabad (1:100000) by GSI and geochemical survey (1:100000). The gold grade in the anomalies ranges between 1 to 25 ppb. Lithology of the area consists of Eocene volcanics and monzonite bodies in the northwest. The studied area is located between 58 54' 40" to 58 58' 13" E and 35 16' 30" to 35 20' 30"N.
   119 rock samples were taken for petrography, mineralography, geochemical analysis on silica veins and alterations on the scale 1:20000. 95% of rocks in the area involve latite, andesite, quartz latite, tuff, viteric tuff, trachy andesite and andesite-latite. Faults play a major role in conducting the hydrothermal fluids toward veins and fractures. Veins are mostly silicic. Minerals are layered that show a change of chemical composition during crystallization. Mineralization is younger in the internal portion of veins. The resource is epigenetic. Alteration exists around veins with lower gold grade.
  
 
 
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