American Journal of Mining and Metallurgy
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American Journal of Mining and Metallurgy. 2014, 2(1), 8-16
DOI: 10.12691/ajmm-2-1-2
Open AccessArticle

Stream Sediment Geochemical Survey of Gouap-Nkollo Prospect, Southern Cameroon: Implications for Gold and LREE Exploration

Soh Tamehe Landry1, Ganno Sylvestre1, , Kouankap Nono Gus Djibril1, 2, Ngnotue Timoleon3, Kankeu Boniface4 and Nzenti Jean Paul1

1Laboratory of Petrology and Structural Geology, University of Yaoundé I, Cameroon

2Department of Geology, HTTC, University of Bamenda, Cameroon

3Department of Geology, University of Dschang, Dschang, Cameroon

4Institut de Recherches Géologiques et Minières, Yaoundé, Cameroun

Pub. Date: May 07, 2014

Cite this paper:
Soh Tamehe Landry, Ganno Sylvestre, Kouankap Nono Gus Djibril, Ngnotue Timoleon, Kankeu Boniface and Nzenti Jean Paul. Stream Sediment Geochemical Survey of Gouap-Nkollo Prospect, Southern Cameroon: Implications for Gold and LREE Exploration. American Journal of Mining and Metallurgy. 2014; 2(1):8-16. doi: 10.12691/ajmm-2-1-2

Abstract

Stream sediments play a significant role in geochemistry exploration by identifying possible sources of anomalous element concentration. This work is the baseline stream sediments geochemical study which brings general information on the geochemical dispersion of the metal elements (especially gold) at Gouap-Nkollo prospect (SW Cameroon) with the aim of providing a useful guide for future exploration strategies. For this study a concentration of 47 elements was measured in 10 stream sediment samples using BLEG and ICP-MS methods, but emphasis was given to the following 21 chemical elements: Al, Ca, Fe, K, Mg, Na, P Ag, Au, B, Co, Cr, Cu, Mn, Ni, Ti, Zn, Ce, La Th, U and Zr. Averaged elemental concentration for each samples obtained by statistical analysis showing patterns of enrichment and depletion which may relate to localized mineralization conditions or local lithological changes. Results showed that the stream sediments have high concentrations of Au, Ce and La with average values of 314.85ppm, 19081ppm and 11808ppm respectively for gold, cerium and lanthanum. Cerium and Lanthanum have considerably high concentrations when compared with other Rare Earth Elements (REE) analyzed. These concentrations represent interesting indices for Au and LREE mineralization’s. The geochemical dispersion of the metal elements (especially gold) reveals that high concentrations are recorded in the northern part of the prospect, close to the quartz-tourmaline vein within the quartzite. This result indicates that the Au and other metal elements probably originated from the quartz-tourmaline veins hosted by surrounding rocks. Detailed exploration work including geochemical soil sampling and geophysical survey is highly recommended in the northern part of the Gouap-Nkollo prospect, where anomalous concentrations of Au were observed, for further investigation.

Keywords:
stream sediments geochemistry anomalous concentrations Gouap-Nkollo Cameroon

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References:

[1]  Marjoribanks, R. Geological Methods in Mineral Exploration and Mining. Second Edition, Springer-Verlag Berlin Heidelberg, 2010.
 
[2]  Plumlee, G.S. The environmental geology of mineral deposits. In: PLUMLEE, G.S. & M.J. LOGSDON (Eds), The Environmental Geochemistry of Mineral Deposits, Part A. Processes,Techniques, and Health Issues, Society of Economic Geologists, Reviews in Economic Geology, 6A, 71-116, 1999.
 
[3]  Atsuyuki, O., Noboru, I., Shigeru, T., Yoshiko, T., 2005. Influence of surface geology and mineral deposits on the spatial distributions of element concentrations in the stream sediments of Hokkaido Japan. Journal of Geochemical Exploration, 86, 86-103, 2005.
 
[4]  Robb, L. Introduction to ore-forming processes. Blackwell Publishing, ISBN 0-632-06378-5 p373 pp., 2005.
 
[5]  Baume,r A., and Fraser, R.B. Panguna porphyry copper deposit, Papua New Guinea. In: CLKnight (ed) Economic geology of Australia and Papua New Guinea I – Metals. Australasian Institute of Mining and Metallurgy, Melbourne, 855-866, 1975.
 
[6]  Embui, V.F., Omang, B. O., Che, V. B., Nforba, M.T. 4, Suh C. E. Gold grade variation and stream sediment geochemistry of the Vaimba-Lidi drainage system, northern Cameroon (West Africa). Natural Science, (5)2A, 282-290, 2013.
 
[7]  Suh, C.E., Lehmann, B. and Mafany, G.T. Geology and geochemical aspects of lode gold mineralization at Dimako—Mboscorro, SE Cameroon. Geochemistry: Exploration, Environment, Analysis, 6, 295-309, 2006.
 
[8]  King, R.W. Geochemical characteristics of tourmaline from superior province Archaean lode-gold deposits: implications for source regions and processes. In: Bicentennial Gold ‘88. Geological Society Australia Abstract Series, 2, 445-447, 1988.
 
[9]  Dommanget, A., Milési, J.P. and Diallo, M. The Loulo gold and tourmaline-bearing deposit: A polymorph type in the Early Proterozoic of Mali (West Africa). Mineralium Deposita 28, 253-263, 1993.
 
[10]  Anglin, C.D., Jonasson, I.R. and Franklin, J.M. 1996. Sm–Nd dating of scheelite and tourmaline: implications for the genesis of Archean gold deposits, Val d’Or, Canada. Economic Geoogy, 91, 1372-1382, 1996.
 
[11]  Deksissa, D.J., and Koeberl, C. Geochemistry and petrography of gold-quartz-tourmaline veins of the Okote area, southern Ethiopia: implications for gold exploration. Mineralogy and Petrology, 75, 101-122, 2002.
 
[12]  Baksheev, I.A., Prokof’ev, V.Y., Yapaskurt, V.O., Vigasina, M.F., Zorina, L.D. and Solov’ev, V.N. Ferric-iron-rich tourmaline from the Darasun gold deposit, Transbaikalia, Russia. Canadian Mineralogist, 49, 263-276, 2011.
 
[13]  Tornos, F., Wiedenbeck M., and Velasco, F. The boron isotope geochemistry of tourmaline-rich alteration in the IOCG systems of northern Chile: implications for a magmatic-hydrothermal origin. Mineralium Deposita 47, 483-499, 2012.
 
[14]  Feybesse, J.L., Johan, V., Maurizot, P. and Abessolo, A. Evolution tectono métamorphique libérienne et éburnéenne de la partie NW du Craton Zaïrois (SW Cameroun). In G. Matheis and H. Schandelmeier (Editors), Current research in African Earth Sciences. Balkema, Rotterdam, 9-12, 1987.
 
[15]  Toteu, S.M., Van Schmus, W.R., Penaye, J., and Nyobé, J.B. U-Pb and Sm-Nd evidence of eburnean and pan African high grade metamorphism in Cratonic rock of southern Cameroon. Precambrian Research, 67, 321-347, 1994.
 
[16]  Van Schmus, W.R., Toteu, S.F. Were the Congo craton and the Sào Francisco craton joined during the fusion of Gondwanaland? Eostrans , 73(14), Spring Meeting, Supplement p. 365, 1992.
 
[17]  Penaye, J., Toteu, S.F., Michard, A., Van Schmus, W.R. and Nzenti, J.P. U/Pb and Sm/Nd preliminary geochronologic data on the Yaoundé series, Cameroon: reinterpretation of granulitic rock as the suture of the collision in the « Centrafricain » belt. Comptes Rendus de l’Académie des Sciences, Paris, 317, 789-794, 1993.
 
[18]  Lerouge, C., Cocherie, A., Toteu, S.F., Penaye, J., Milesi, J.P., Tchameni, R., Nsifa, N.E., Fanning, C.M. and Deloule, E. SHRIMP U/Pb zircon age evidence for paleoproterozoic sedimentation and 2.05Ga syntectonic plutonism in the Nyong Group, South-western Cameroon: consequences for the eburnean-transamazonian belt of NE Brasil and central Africa. Journal of African Earth Sciences, 44, 413-427, 2006.
 
[19]  Lasserre, M., Soba, D. Age Libérien des granodiorites et des gneiss à pyroxènes du Cameroun Méridional. Bulletin BRGM 2(4), 17-32, 1976.
 
[20]  Maurizot, P., Abessolo, A, Feybesse, J.L., Johan V. and Lecomte P. Etude et prospection minière du Sud-Ouest Cameroun. Synthèse des travaux de 1978 à 1985. Rapport BRGM, Orléans 85, CMR 066, 274 pp, 1986.
 
[21]  Sikaping, S. Métamorphisme et minéralisations associées dans le secteur de Gouap-Nkollo (Région du Sud). Unpublished Master thesis, University of Yaoundé 1, 77p., 2012.
 
[22]  Soh Tamehe, L. Roches à tourmaline et prospection alluvionnaire de l’or à Nkollo (Région du Sud Cameroun). Unpublished Master thesis, University of Yaoundé 1, 82p., 2013.
 
[23]  Ganno, S. Gouap prospect: iron and gold mineralization potentials. Technical report, pp15, 2012.
 
[24]  Hoffman, E.L., Clark, J.R. and Yeager, J.R. Gold Analysis – Fire Assaying and Alternative Methods. Exploration and Mining Geology, 7(1, 2), 155-160, 1998.
 
[25]  Basham, I.R. and T.K. Smith. On the occurrence of an unusual form of monazite in panned stream sediments in Wales. Geology Journal, 18, 121-127, 1983.