| Citation: |
ZHAO Shu-fang, WU Zheng-shou, ZHANG Ai-kui, LIU Guang-lian. Geological Features, Deposit Genesis and Prospecting Potential of Changshan Molybdenum Deposit in Qimantage, Qinghai Province[J]. Northwestern Geology, 2014, 47(1): 179-187.
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Geological Features, Deposit Genesis and Prospecting Potential of Changshan Molybdenum Deposit in Qimantage, Qinghai Province
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Abstract
Changshan molybdenum deposit is located in Qimantage area of western East Kunlun of Qinghai province. In the past, Changshan deposit was a contact metasomatic iron deposit. Recently, some granite porphyries and porphyry molybdenum mines have been found, which has great significance for metallogenic study and mineral exploration of Qimantage area. Based on studying distribution, rock types, petrology and petrochemistry of intrusive rocks, the result has been achieved as follows. These granite porphyries are some apophyses intruded into porphyritic monzogranite. The outcrop area of granite porphyries is less than 0.01 km2 and the biggest thickness are 30 meters. These rocks have the features of higher SiO2 content, lower TiO2 content, bigger ratio of K2O and Na2O, higher differentiation and lower consolidation. They are similar with potassic calc alkaline granite and mineralization porphyry rocks of Tibet Gangdise in petrochemistry feature, except for the higher SiO2 and the lower Al2O3. They are possibly related to extension of post-collision tectonic. The genesis of Changshan molybdenum deposit is considered as porphyry-type. There are better prospecting potential in mid-west Changshan deposit and Qimantage region.-
Keywords:
- intrusive rocks /
- porphyry molybdenum /
- prospecting potential /
- Qimantage /
- Qinghai
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References
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ZHAO Shu-fang, WU Zheng-shou, ZHANG Ai-kui, LIU Guang-lian. Geological Features, Deposit Genesis and Prospecting Potential of Changshan Molybdenum Deposit in Qimantage, Qinghai Province[J]. Northwestern Geology, 2014, 47(1): 179-187.
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