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Dabney Porphyry-Quartz Veins Cu-Mo Deposits In The Compound In The Qushui Of Tibet

Posted on:2017-09-30Degree:MasterType:Thesis
Country:ChinaCandidate:Z J C OuFull Text:PDF
GTID:2310330488962454Subject:Mineralogy, petrology of ore deposits
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Geological characteristics of the deposit, geochemical characteristics,metallogenic physicochemical conditions and metallogenic epoch studies confirm Dabney copper-molybdenum deposit mining intrusive rock types, numerous rock,mainly granite intrusive rocks. Ore output in the Miocene emplacement of the granodiorite porphyry(????1) and porphyry(???1) body and porphyry ore and rock(Paleocene Eocene granodiorite nearby rock) contact zone, deposit after the collision product of extensional environment magmatic evolution phase.Deposit there early and late two mineralization. Lead to early magmatic mineralization has adakites magma characteristics, around 16.2Ma(Miocene)emplaced in the Paleocene and Eocene granodiorite Paleogene Paleocene canon group(E1d) volcanic rock type granodiorite porphyry, associated potassic alteration,silicification, clay-based, and so green plate rock wall rock alteration. Mineralization occurs in later around 14.8Ma, mainly for low-grade porphyry copper-molybdenum mineralization. Time difference diagenesis and mineralization insufficient 2Ma,having instantaneous mineralization characteristics and metallogenic belt Gangdese other similar deposit. Advanced silicon-rich mineralization in low temperature hydrothermal ore mineralization along fractures early rock festival grounds with a broken filling, accountable form of quartz vein-type copper-polymetallic mineralization. According superimposed mineralization characteristics, genesis Types as porphyry- quartz vein complex. According to the establishment of a deposit of more than superposition metallogenic model.In mineralization and mineralization characteristics based on the study and research methods through physical tests and found mineralization favorable position having a negative magnetic anomaly, low resistivity, high polarization characteristics,and accordingly the establishment of a prospecting model. Results of geophysical prospecting for mining ore analysis showed good results.
Keywords/Search Tags:Dabney copper-molybdenum deposit, mineralization, instantaneous mineralization, composite-type deposits
PDF Full Text Request
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