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Interpretation of lithogeochemical and geophysical data to identify the buried mineralized area in Cu-Au porphyry of Dalli-Northern Hill

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Geochemical and statistical analyses of 165 soil samples led to Cu-Au anomaly separation in Dalli-Northern Hill by using fractal geometry and U-spatial statistic. There was a good correlation between the anomaly areas and outcrops of quartz diorite porphyry (QDP) in the study area. Based on the interpretation of soil data and anomaly areas determination, one trench was suggested in NE-SW direction for follow-up exploration. Based on the rock sample analyses from the trenches in QDP rocks, the ratio of \( \frac{{{\mathrm{Ba}} \times {\mathrm{K}}}}{{{\mathrm{Ca}} \times {\mathrm{Zn}}}} \) clearly separated the mineralization area and considered as an index ratio for follow-up exploration stage. Dalli-Northern Hill anomaly includes pyrite/chalcopyrite/bornite, which is dominantly abundant in the ore body. Three IP profiles (IP04, IP05, and IP06) confirmed the conductivity of the sulfide zone. The background chargeability in the study area was about 5.4 mV/V and the average of maximum apparent chargeability in the study area was 44.4 mV/V, which could be related to the higher intensity of Cu-Fe sulfide minerals. The contact of andesite and quartz diorite has shown the strongest chargeability (71 mV/V) and high magnetic anomalies in the study area. DDH03 and DDH04 boreholes mostly confirmed that the IP/magnetic/geochemical anomalies were related to the contact of intrusive rocks and the wall rock of andesite. The combination of geochemical information from soil and rock together with geophysical data (induced polarization/resistivity) led to the subsurface geological cross sections and location of the mineralized zone enriched of sulfide. The mineralized zone in Dalli-Northern Hill distinct could be identified by potassic to weak sericitic and trace chloritic alteration, high values of the \( \frac{{{\mathrm{Ba}} \times {\mathrm{K}}}}{{{\mathrm{Ca}} \times {\mathrm{Zn}}}} \) ratio accompanied with high gold and copper values and enrichment from magnetite minerals. The high magnetic susceptibility, low resistivity, and high chargeability are considered as geophysical properties of the mineralized zones.

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  • Asadi Haroni H (2008) First stage drilling report on Dalli porphyry Cu-Au prospect, Central Province of Iran, Technical Report

  • Cheng Q (1999) Spatial and scaling modelling for geochemical anomaly separation. J Geochem Explor 65:175–194

    Article  Google Scholar 

  • Cheng Q, Li Q (2002) A fractal concentration–area method for assigning a color palette for image representation. Comput Geosci 28:567–575

    Article  Google Scholar 

  • Cheng Q, Agterberg FP, Bonham-Carter GF (1996) A spatial analysis method for geochemical anomaly separation. J Geochem Explor 56:183–195

    Article  Google Scholar 

  • Cooke DR, Hollings P, Walshe JL (2005) Giant porphyry deposits: characteristics, distribution, and tectonic controls. Econ Geol 100:801–818

    Article  Google Scholar 

  • Cooke DR, Wilson AJ, House MJ, Wolfe RC, Walshe JL, Lickford V, Crawford AJ (2007) Alkalic porphyry Au–Cu and associated mineral deposits of the Ordovician to Early Silurian Macquarie Arc, New South Wales. Aust J Earth Sci 54:4545–4630

    Article  Google Scholar 

  • Darabi Golestan F (2011) Interpretation of secondary lithogeochemical data accompany with primary lithogeochemical investigations to control the drilling plan, Msc. Thesis, p. 163

  • Ford A, Blenkinsop TG (2008) Combining fractal analysis of mineral deposit clustering with weights of evidence to evaluate patterns of mineralization: application to copper deposits of the Mount Isa Inlier, NW Queensland, Australia. Ore Geol Rev 33:435–450

    Article  Google Scholar 

  • Ghavami-Riabi R, Theart HFJ, De Jager C (2008) Detection of concealed Cu-Zn massive sulfide mineralization in eolian sand above a calcrete layer in the eastern part of the Namaqua Metamorphic Province, South Africa. J Geochem Explor 97(2-3):43–102

    Article  Google Scholar 

  • Ghavami-Riabi R, Seyedrahimi-Niaraq MM, Khalokakaie R, Hazareh MR (2010) U-spatial statistic data modeled on a probability diagram for investigation of mineralization phases and exploration of shear zone gold deposits. J Geochem Explor 104:27–33

    Article  Google Scholar 

  • Graham S, Pearson N, Jackson S, Griffin W, O’Reilly SY (2004) Tracing Cu and Fe from source to porphyry: in situ determination of Cu and Fe isotope ratios in sulfides from the Grasberg Cu–Au deposit. Chem Geol 207:147–169

    Article  Google Scholar 

  • Hassani H, Daya AA, Alinia F (2009) Application of a fractal method relating power spectrum and area for separation of geochemical anomalies from background. Aust J Basic Appl Sci 3(4):3307–3320

    Google Scholar 

  • Hezarkhani A (2006a) Hydrothermal evolution of the Sar-Cheshmeh porphyry Cu–Mo deposit. Iran: evidence from fluid inclusions. J Asian Earth Sci 28:409–422

    Article  Google Scholar 

  • Hezarkhani A (2006b) Petrology of the intrusive rocks within the Sungun porphyry copper deposit, Azerbaijan, Iran. J Asian Earth Sci 27:326–340

    Article  Google Scholar 

  • Hezarkhani A, Williams-Jones AE, Gammons CH (1999) Factors controlling copper solubility and chalcopyrite deposition in the Sungun porphyry copper deposit, Iran. Miner Deposita 34:770–783

    Article  Google Scholar 

  • Hou ZQ, Yang ZM, Qu XM, Rui ZY, Meng XJ, Gao YF (2009) The Miocene Gangdese porphyry copper belt generated during post-collisional extension in the Tibetan Orogen. Ore Geology Reviews 36:25–51

    Article  Google Scholar 

  • Perello J, Razique A, Schloderer J, Asadur R (2008) The Chagai porphyry copper belt, Baluchistan Province, Pakistan. Econ Geol 103:1583–1612

    Article  Google Scholar 

  • Pourhosseini F (1981) Petrogenesis of Iranian plutons: a study of the Natanz and Bazman intrusive complexes. Ph.D thesis, University of Cambridge, p. 315

  • Qu X-M, Hou Z-Q, Zaw K, Li YG (2007) The characteristics and genesis of Gangdese porphyry copper deposits in the southern Tibetan Plateau: evidence from preliminary geochemical and geochronological results. Ore Geol Rev 31:205–223

    Article  Google Scholar 

  • Richards JP (2003) Tectono-magmatic precursors for porphyry Cu–(Mo–Au) deposit formation. Econ Geol 98:1515–1533

    Article  Google Scholar 

  • Richards JP (2005) Cumulative factors in the generation of giant calc-alkaline porphyry Cu deposits. In: Porter TM (ed) Super-porphyry copper & gold deposits: a global perspective. PGC, Adelaide, pp 7–25

    Google Scholar 

  • Shafiei B, Haschke M, Shahabpour J (2009) Recycling of orogenic arc crust triggers porphyry Cu mineralization in Kerman Cenozoic arc rocks, southeastern Iran. Miner Deposita 44:265–283

    Article  Google Scholar 

  • Shahabpour J (2005) Tectonic evolution of the orogenic belt in the region located between Kerman and Neyriz. J Asian Earth Sci 24:405–417

    Article  Google Scholar 

  • Stocklin J (1974) Possible ancient continental margins in Iran. In: Burk CA, Drake CL (eds) The geology of continental margins. Springer, New York, pp 873–887

    Google Scholar 

  • Stocklin J, Setudehnia A (1974) Stratigraphic lexicon of Iran, Geological Survey of Iran. Report no. 18, first edition, p 376

  • Wang Q, Deng J, Liu H, Yang L, Wan L, Zhang R (2010) Fractal models for ore reserve estimation. Ore Geology Reviews 37:2–14

    Article  Google Scholar 

  • Wilson A, Cooke D and Thompson John (2002) Alkalic and high-K calc-alkalic porphyry Au-Cu deposits: a summary. CODES Special, Publication 4, pp. 51–55

  • Yang ZM, Hou ZQ, White NC, Chang ZS, Li ZQ, Song YC (2009) Geology of the post-collisional porphyry copper–molybdenum deposit at Qulong, Tibet. Ore Geol Rev 36:133–159

    Article  Google Scholar 

  • Zarasvandi A, Liaghat S, Zentilli M (2005) Geology of the Darreh-Zerreshk and Ali-Abad porphyry copper deposits, Central Iran. Int Geol Rev 47:620–646

    Article  Google Scholar 

  • Hou Z, Zhang H, Pan X, Yang Z (2011) Porphyry Cu (–Mo–Au) deposits related to melting of thickened mafic lower crust: examples from the eastern Tethyan metallogenic domain. Ore Geology Reviews 39(1–2):21–45

    Article  Google Scholar 

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Correspondence to F. Darabi-Golestan.

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Darabi-Golestan, F., Ghavami-Riabi, R., Khalokakaie, R. et al. Interpretation of lithogeochemical and geophysical data to identify the buried mineralized area in Cu-Au porphyry of Dalli-Northern Hill. Arab J Geosci 6, 4499–4509 (2013).

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