IJG  Vol.6 No.10 , October 2015
Geochemical Exploration for Gold and the Association of As-Cu-Pb-Sn-Zn-Li in the Upper Proterozoic Granitoids of the Wadi Rumman Area, Southwest Jordan
ABSTRACT
The geochemical studies were conducted in an area covering about 15 km2 of the south side of the Wadi Rumman area, SW Jordan. The study area included a part of a basement of complex exposed rocks in southwestern Jordan. The complexes comprised igneous and metamorphic suites, mostly from the late Proterozoic age. A systematic geochemical sampling was conducted using rock and heavy mineral-panned concentrate of geochemical samples. Fifty rock samples were collected from the granitic rocks, simple pegmatite dyke, quartz veins and alteration zone, which covered the area. Next, 45 heavy mineral-panned concentrate samples were collected from the alluvium in the stream sediment within the catchment area, and the dray was sieved to less than 1 mm grain size. The geochemical samples were analyzed for their trace elements and gold by using Ione Conductive Coupled Plasma Emission Spectroscopy (ICP-AES) and the Atomic Absorption Spectrometer (AAS) at Natural Resources Authority (NRA) Labs. The results of the geochemical analysis indicated the presence of gold and heavy minerals in the study area, a result considered abnormal in the rock samples. A strong positive correlation was recorded of Au with As, Cu and W (r = 0.82, 0.7 and 1.0), as with Mo (r = 0.83), Cu with Pb (r = 0.83), Sn with Mo (r = 0.73), Mo with W (r = 0.97), Zn with W (r = 0.71), and Li with Bi (r = 0.7). These correlations revealed gold associated within the hydrothermal alteration, quartz veins and pegmatite dyke. Abnormal metals such as As and Bi were good path-finders to find Au. The HM samples showed low positive linear correlations among the concentrations of Au with As, Zn and Li, and negative linear correlations of Au with Pb, Sn, Bi and W. The combination of both rock and heavy mineral concentrate samples shows four geochemical anomalous areas of gold and heavy minerals. The geochemical signatures of Au and As in the Wadi Rumman appear to be in the hydrothermal alteration, quartz veins and pegmatite dyke, respectively. Heavy mineral concentration sampling delineated the Au geochemical anomaly in area 1 specificities with the rock geochemical anomaly of area 1.

Cite this paper
Bany Yaseen, I. (2015) Geochemical Exploration for Gold and the Association of As-Cu-Pb-Sn-Zn-Li in the Upper Proterozoic Granitoids of the Wadi Rumman Area, Southwest Jordan. International Journal of Geosciences, 6, 1140-1153. doi: 10.4236/ijg.2015.610089.
References
[1]   Vladimir, K., Esa, S., Pavel, S. and Erik, T. (2000) Gold Geochemistry and Mineralogy of Till Fines: A New Approach for Data Integration. Bulletin of the Geological Society of Finland, 72, Parts 1-2, 57-69.

[2]   Rashdan, M. (1988) The Regional Geology of Aqaba-Wadi Araba Area. Bull No. 7. Geology Director. Natural Resources Authority, Amman.

[3]   Jarrar, G., Wachendorf, H. and Zellmer H. (1991) The Saramuj Conglomerate: Evolution of a Pan-African Molasse Sequence from Southwest Jordan. Neues Jahrbuch fur Mineraloggie and Palaeontogie, 335-356.

[4]   McCourt, W. and Ibrahim, K. (1990) The Geology, Geochemistry and Tectonic Setting of the Granite and Associated Rocks in the Aqaba and Araba Complexes of Southwest Jordan. Bull. 10, Geology Director, Natural Resources Authority, Amman.

[5]   Ibrahim, K.M. and McCourt, W.J. (1995) Neoproterozoic Granite Magmatism and Tectonic Evolution of the Northern Arabian Shield, Evidence from Southwest Jordan, Journal African Earth Sciences, 20, 103-118. http://dx.doi.org/10.1016/0899-5362(95)00037-T

[6]   Jarrar, G., Wachendorf, H. and Zachmann, D. (1993) A Pan-African Alkaline Pluton Intruding the Sarmouj Conglomerate Southwest Jordan. Geologische Rundschau, 82, 121-135.
http://dx.doi.org/10.1007/BF00563275

[7]   Jarrar, G., Stern, R.J., Saffarini, G. and Al-Zubi, H. (2003) Late and Post Orogenic Neoproterozoic Intrusion of Jordan: Implication for Crustal Growth in the Northernmost Segment of the East African. Orogen Precambrian Research, 23, 295-319. http://dx.doi.org/10.1016/S0301-9268(03)00073-1

[8]   Rabba, I. and Ibrahim, K. (1988) Petrography of the Plutonic Rocks of the Aqaba Complex. Bull No. 9. Geology Director, Natural Resources Authority, Amman.

[9]   Abdulhamid, G. (1986) Geological Map Jabal Um Ishrin (Wadi Rum), Scale 1:50,000. Natural Resources Authority, Geological Directorate, Amman.

[10]   Abdulhamid, G. (1990) The Geology of Jabal Umm Ishrin Area (Wadi Rum), Map Sheet No. 3049II. Bulletin 14, Natural Resources Authority, Geological Directorate. Map Division, Amman.

[11]   Bender, F. (1974) Geology of the Arabian Peninsula, Jordan. US Geological Survey Professional Paper, 36, 1-560.

[12]   Barjous, M. (1987) Structural Study of the Area between Petra an Ash Shawbak. MSC. Theses, University of Jordan, Amman.

[13]   Clark, M.D. (1985) Late Proterozoic Crustal Evolution of the Midyan Region, Northwestern Saudi Arabia. Geology, 13, 611-615. http://dx.doi.org/10.1130/0091-7613(1985)13<611:LPCEOT>2.0.CO;2

[14]   Meier, A.L. (1980) Flameless Atomic-Absorption Determination of Gold in Geological materials. Journal of Geochemical Exploration, 13, 77-85. http://dx.doi.org/10.1016/0375-6742(80)90022-9

[15]   NRA and BRGM PROJECT Staff (1994) Geochemical and Mineral Exploration of Araba-Aqaba Complex—Final report. NRA, Amman, 209.

[16]   Al-Hwaiti, M., Zoheir, B., Lehmann, B. and Rabba, I. (2010) Epithermal Gold Mineralization at Wadi AbuKhushayba, Southwestern Jordan. Ore Geology Reviews, 38, 101-112.
http://dx.doi.org/10.1016/j.oregeorev.2010.07.002

[17]   Wang, X.Q., Xie, X.J., Cheng, Z.Z. and Liu, D.W. (1999) Delineation of Regional Geochemical Anomalies Penetrating through Thick cover in Concealed Terrains—A Case History from the Olympic Dam Deposit, Australia. Journal of Geochemical Exploration, 66, 85-97.
http://dx.doi.org/10.1016/S0375-6742(99)00036-9

[18]   Levinson, A.A. (1974) Introduction to Exploration Geochemistry. Applied Publishing Ltd., Wilmette.

[19]   Rose, A.W., Hawks, H.E. and Webb, J.H. (1979) Geochemistry in Mineral Exploration. Academic Press, New York.

[20]   Anne, T., Pertti S. and Helena H. (2015) Gold Exploration Using Heavy Minerals in Till and Weathered Bedrock in Petajaselka, Northern Finland. Geochemistry: Exploration, Environment, Analysis, 15, 205-221. http://dx.doi.org/10.1144/geochem2014-288

[21]   Anthony, M. (1993) Ore Geology and Industrial Minerals an Introduction. 3rd Edition, Blackwell Publishing, Malden, 389.

[22]   Marcondes, L.C., Romulo, S. and Newton, C. (1999) The Geochemical Association Au-As-B-Cu-Sn-W in Latosal, Colluviums, Lateritic Iron Crust and Gossan in Carajas, Brazil: Importance for Primary Ore Identification. Journal of Geochemical Exploration, 67, 33-49.
http://dx.doi.org/10.1016/S0375-6742(99)00065-5

[23]   Bill, G. and Geo, P. (2015) Discovery Mineral Exploration Consultants. info@discoveryconsultants.com

[24]   Al-Dalo Abdul, R. and Bany Yaseen, I. (2007) Geochemical Exploration for Gold and Minerals of Northern Wadi El Marsad Area, Natural Resources Authority, Geochemistry Division, Amman.

[25]   Hseyun, Y. (2007) Stream Sediment Geochemical Exploration for Gold in the Kazda? Dome in the Biga Peninsula, Western Turkey. Turkish Journal of Earth Sciences, 16, 33-55.

 
 
Top