Study of Trace and Rare Earth Elements in Coal Basins of Iran (Study in Karmozd underground coal mine)

Abstract

This research presents data on widespread abnormal accumulations of Trace and Rare Earth Elements in many coal deposits worldwide. There have been many studies on the distribution and geochemistry of REEs in coal. ∑REE content in most coals varies from several µg/g to several hundred µg/g, and the REEs are distributed in minerals although some are associated with organic material in coal. In this Study, 4 samples from Karmozd coal mine in Alborz region of Iran have been analysed using ICP-MS method. The Results show some Trace and Rare Earth Elements accumulation in coal basin of Iran are much higher than China, USA, most world coal and Clark value. In Karmozd coal mine, the average ∑REE and outlook index (Coutl) are 378/21 µg/g, 0/48 respectively. The enrichments origin of these elements in karmozd coal basin is clastogenic and related by leach of pyroclastic materials riched from light rare earth elements. At present usual REE deposits (Carbonatite and weathered crust elution) are being exhausted therefore, it is possible to recover REE during different stages of developing such coal deposits: overburden removal, coal mining and combustion, and after exhaustion of the solid fuel resources.

Keywords


[1] Henderson P., "Rare Earth Element Geochemistry", in Developments in Geochemistry. 1984, Elsevier. p. 1-510.

]2[ یعقوب پور ع.، "کانی‌های خاک‌های کمیاب"، انتشارات دانشگاه تهران، ص 428 (1380).

[3] Seredin V. V., Dai S., "Coal deposits as potential alternative sources for lanthanides and yttrium", International Journal of Coal Geology 94 (2012) 67-93.

[4] "Rare Earth Minerals and Products", IHS Chemical CEH Rare Earth Minerals and Products Report, 2013, (http://www.ihs.com/products/ chemical/planning/ceh/rare-earth-minerals.aspx)

[5] Bouzinos A., et al., "Geological factors influencing the concentration of trace elements in the Philippi peatland", eastern Macedonia, Greece. coal geology, 36 (1998) 295-313.

[6] Bojarska K., Bzowski Z., "Major chemical components and mineralogical character of the inorganic matter of energetic coal from the east part of upper Silesia coal basin (Poland)." Proc 12th Annu Int Pittsburgh coal conf. Pittsburgh. (1995) 511-516.

[7] Popovic A., Djordjevic D., Polic P.,"Trace and major element pollution originating from coal ash suspension and transport processes", Environmental International 26 (Environmental. International), 26(4) (2001) 251-255..

[8] Ren D., et al., "Distribution of minor and trace element in Chinese Coal", Coal Geology 40 (2–3) (1999) 109-118.

]9[ بهار فیروزی خ.، "کلیاتی در مورد زغالسنگ و اشاره ای مختصر به گسترش آن در ایران"، تهران: سازمان زمین شناسی و اکتشافات معدنی کشور, 1382.

[10] Dai S., et al., "A new type of Nb (Ta)–Zr(Hf)–REE–Ga polymetallic deposit in the late Permian", International Journal of Coal Geology 83(1) (2010) 55-63.

[11] Dai S., et al., “Mineralogy and geochemistry of boehmite-rich coals: New insights from the Haerwusu Surface Mine, Jungar Coalfield, Inner Mongolia, China”, International Journal of Coal Geology, Volume 74(3-4) (2008) 185–202.

[12] Finkelman R.B., ”Trace and minor elements in coal in : Engel, M.H.,macko, S.A.(Eds.)”, Organic geochemistry.plenum,NewYork (1993) 593-607.

[13] Taylor S.R., Mclennan S.M., ”The continental crust: its composition and ecolution”, Blackwell, Oxford, 21(1) (1985) 85-86.

[14] Eskenazy G.M., "Aspects of the geochemistry of rare earth elements in coal", International Journal of Coal Geology 38 (1999) 285-295.

[15] Zheng, L., et al., "Geochemistry of rare earth elements in Permian coals from the Huaibei Coalfield, China", Journal of Asian Earth Sciences, 31(2) (2007) 167-176.

[16] Yazdi M., “Geological and Geochemical Features of Alborz Basin Coal Deposits, Iran”, Journal of Sciences, University of Tehran, 23(2) (2012) 163-169.

[17] Aktiongeselischaft D., "The coal Deposits of Zirab- Karmozd Iran. Part 1 ", Geology and coal Reserves Part 1 (1982) 181.

[18] وحدتی دانشمند ف.، "نقشه زمین شناسی 1:250 هزارم ساری"، سازمان زمین شناسی و اکتشافات معدنی کشور، 1369.

[19] ﺷﺮﻛﺖ ﺯﻏﺎﻝﺳﻨﮓ ﺍﻟﺒﺮﺯ ﻣﺮﻛﺰﻱ، "ﮔﺰﺍﺭﺵ ﻣﺮﺑﻮﻁ ﺑﻪ ﻋﻤﻠﻴﺎﺕ ﺍﻛﺘﺸﺎﻑ ﺯﻣﻴﻦ ﺷﻨﺎﺳﻲ ﺩﺭ ﻣﺤﺪﻭﺩﻩ ﺯﻳﺮا ﺏ-ﻛﺎﺭﻣﺰﺩ ﻭﺯﺍﺭﺕ ﻣﻌﺎﺩﻥ و ﻓﻠﺰﺍﺕ"، ﺷﺮﻛﺖ ﻣﻠﻲ ﻓﻮﻻﺩ ﺍﻳﺮﺍن (١٩٦٩ -١٩٧٠) ، ص 193

[20] قلی پور م.، مظاهری ا., "بررسی ویژگیهای ژئوشیمیایی و کانی شناسی زغال سنگهای حوزه زغالی کارمزد، البرز مرکزی"، بلور شناسی و کانی شناسی ایران, 17(4) (1388) 655-670.

[21] قربانی م.، "دیباچه ای بر زمین شناسی اقتصادی ایران"، سازمان زمین‌شناسی و اکتشافات معدنی کشور، 1381: فصل پنجم.

[22] Goodarzi F., Grieve D.A., Labonte M., "Mineralogical and Elemental Composition of Tonsteins from the East Kootenay Coalfields", Southeastern British Columbia. Energy Sources, 12(3) (1990) 265-295.