Discovered and undiscovered gold endowment of Turkey: a quantitative mineral resource assessment using GIS and rank statistical analysis

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• 作者：Ozcan Yigit (1) ozcanyigit@hotmail.com
• 关键词：Zipf’ ; s law &#8211 ; Pareto &#8211 ; Tethyan metallogeny &#8211 ; Turkey &#8211 ; Gold exploration
• 刊名：Mineralium Deposita
• 出版年：2012
• 出版时间：June 2012
• 年：2012
• 卷：47
• 期：5
• 页码：521-534
• 全文大小：5.0 MB
• 参考文献：1. Adamic LA, Huberman BA (2002) Zipf’s law and the internet. Glottometrics 3:143–150
  2. Fallon M, Porwal A, Guj P (2010) Prospectivity analysis of the Plutonic Marymia Greenstone Belt, Western Australia. Ore Geol Rev 38:208–218
  3. Folinsbee RE (1977) World’s view-from Alph to Zipf. Geol Soc Am Bull 88(7):897–907
  4. Guj P, McCuaig TC, Garzon R (2007) Can the petroleum industry’s probabilistic approach to targeting and resources definition be applied in predicting mineral discoveries? In: Andrew CJ, et al. (eds) Proceedings of the Ninth Biennial Meeting of the Society for Geology Applied to Mineral Deposits (SGA), Dublin, Ireland, August 20–23, 2007:1467–1470
  5. Guj P, Fallon M, McCuaig TC, Fagan R (2011) A time–series audit of Zipf’s law as a measure of terrane endowment and maturity in mineral exploration. Econ Geol 106:241–259
  6. Hronsky JMA, Groves DI (2008) Science of targeting: definitions, strategies, targeting and performance measurement. Aust J Earth Sci 55:3–12
  7. Juras S, Miller R, Skayman, P (2010) Technical report for the Kisladag Gold Mine, Turkey. Prepared for Eldorado Gold:120p
  8. Kreuzer OP, Etheridge MA, Guj P, McMahon ME, Holden DJ (2008) Linking mineral deposit models to quantitative risk analysis and decision-making in exploration. Econ Geol 103:829–850
  9. Kreuzer OP, Markwitz V, Porwal AK, McCuaig TC (2010) A continent-wide study of Australia’s uranium potential part I: GIS-assisted manual prospectivity analysis. Ore Geol Rev 38:334–366
  10. Mamuse A (2010) Spatial statistical estimation of undiscovered mineral endowment: case for komatiite-associated nickel sulfide resources, Kalgoorlie Terrane, Western Australia. PhD thesis, Curtin University, Perth, Australia: 303p
  11. Mamuse A, Guj P (2011) Rank statistical analysis of nickel sulfide resources of the Norserman-Wiluna Greenstone Belt, Western Australia. Miner Deposita 46:305–318
  12. Merriam DF, Drew LJ, Schuenemeyer JH (2004) Zipf’s law: a viable geological paradigm? Nat Resour Res 13:265–271
  13. Moon CJ, Whateley MKG, Evans AM (2006) Introduction to mineral exploration, 2nd edn. Blackwell, Oxford, 481
  14. Paliwal HV, Bhatnagar SN, Haldar SK (1986) Lead–zinc resource prediction in India: an application of Zipf’s law. Math Geol 18(6):539–549
  15. Pareto V (1927) Manuel d’economie politique, 2nd edn. M Giard, Paris, 695p
  16. Potma W, Roberts PA, Schaubs PM, Sheldon HA, Zhang Y, Hobbs BE, Ord A (2008) Predictive targeting in Australian orogenic-gold systems at the deposit to district scale using numerical modeling. Aust J Earth Sci 55:101–122
  17. Quirk DG, Ruthrauff R (2006) Analysis of reserves discovered in petroleum exploration. J Pet Geol 29:125–146
  18. Root DH, Menzie WD, Scott WA (1992) Computer Monte Carlo simulation in quantitative resource estimation. Nonrenewable Res 1:125–138
  19. Singer DA (2007) Estimating amounts of undiscovered mineral resources. In Briskey, JA, Schulz, KJ (eds), Proceedings for a Workshop on Deposit Modeling, Mineral Resource Assessment, and Their Role in Sustainable Development: USGS Circular 1294:79–84
  20. Singer DA (2010) Progress in integrated quantitative mineral resource assessments. Ore Geol Rev 38:242–250
  21. Singer DA, Kouda R (2011) Probabilistic estimates of number of undiscovered deposits and their total tonnages in permissive tracts using deposit densities. Nat Resour Res 20(2):89–93
  22. Yigit O (2006) Gold in Turkey—a missing link in Tethyan metallogeny. Ore Geol Rev 28:147–179
  23. Yigit O (2007a) “Gold in Turkey—a missing link in Tethyan metallogeny” (Ore Geology Reviews 28:147–179)-Reply. Ore Geol Rev 30:141–142
  24. Yigit O (2007b) Recent discoveries and exploration trends in Turkey. In Andrew CJ, et al. (eds) Proceedings of the Ninth Biennial Meeting of the Society for Geology Applied to Mineral Deposits (SGA), Dublin, Ireland, August 20–23, 2007:109–112
  25. Yigit O (2009) Mineral deposits of Turkey in relation to Tethyan Metallogeny: implications for future mineral exploration. Econ Geol 104:19–51
  26. Yigit O (2010) Bright prospects for gold explorers. Mining Journal Special Publication, Turkey-Gold Deposits: 3–7
  27. Zipf GK (1949) Human behavior and the principle of least effort: an introduction to human ecology. Addison-Wesley, Reading, MA, p 573
• 作者单位：1. Department of Geological Engineering, Canakkale Onsekiz Mart University, Canakkale, 17020 Turkey
• 刊物类别：Earth and Environmental Science
• 刊物主题：Earth sciences
  Geology
  Mineral Resources
  Mineralogy
  
• 出版者：Springer Berlin / Heidelberg
• ISSN：1432-1866

文摘

An assessment of the discovered and undiscovered gold endowment of Turkey, a prolific sector in the Tethyan Metallogenic Belt, is developed from a comprehensive Geographic Information System database containing 402 gold deposits and prospects. The majority of the gold deposits and prospects are epithermal, porphyry, volcanic-associated massive sulfides, orogenic gold, and skarn systems. These five major deposit types form more than 90% of the known gold deposits and prospects. Just 87, corresponding to 21.6%, of the deposits and prospects in the data set have current calculated gold reserve and/or resources, containing a total of 54.885 Moz Au. Current gold reserves of the country are 21.447 Moz constituting 39.1% of the total gold resources, of which 17.1 Moz gold are contained in four deposits. Out of these 87 deposits and prospects, only 27 contain significant gold reserve and/or resources (defined as equal to or more than 0.32 Moz or 10 tons Au), and contain 91.8% of the total gold endowment of the country. The cumulative frequency distribution model of the gold endowment of Turkey abides by log-normal distribution. Observed and estimated 10th, 50th (median), and 90th percentiles of the data are 0.0046 Moz [0.0045 Moz estimated], 0.1030 Moz [0.0875 Moz], and 1.4969 Moz [1.6938 Moz], respectively. The 99th percentile of the data is 7.6444 Moz [18.9636 Moz]. The arithmetic mean of the known gold endowment is 0.657 Moz and the Swanson mean size is 0.492 Moz. The arithmetic mean of the 27 significant gold deposit or prospects is 1.94 Moz. Zipf’s law estimates of the undiscovered (residual) gold resources of Turkey are based on the current size of the largest, rank 1, gold deposit of Turkey, which is the Kisladag porphyry deposit that has 17.481 Moz gold endowment (including past production). Zipf’s law estimates a total of 88.261 Moz natural or total gold endowment, 57.133 Moz or 65% of which has already been found. This predicts at least 31.128 Moz residual or undiscovered gold resources to be found in Turkey, though the lack of full delineation of the rank 1 deposit, Kisladag, means that this figure is very conservative.