High-purity quartz ( HPQ ), the prime source of silica , is increasingly considered a strategic mineral in the world market because it is the raw material for special applications in high-tech industries owing to its unique physical and chemical properties. The expected growth in demand for HPQ implies that more sources have to be found. This is the primary motivation for this study which targets the Supe area, SW Region of Cameroon. The structural occurrences of quartz veins were mapped and samples collected. The chemical nature and textural features of these samples were subsequently analyzed by X-ray tomography, scanning electron microscopy (SEM), and electron microprobe analysis (EMPA). Three deformation events, D 1 - D 3 are recorded. D 1 is marked by the development of the strong S 1 foliation defined by the gneissic layering and schistosity. D 2 is a NE-SW ductile to brittle sinistral shear that controlled the formation of tensio n gashes that served as subsequent pathways for quartz-rich hydrothermal fluids to circulate and eventually precipitate quartz. The presence of rutile, tourmaline, and mica inclusions in the Supe veins affects the purity of the quartz. However, quartz can be treated to improve its quality. Taking into consideration the nine determinant trace elements used to classify HPQ, three (Li, P, and B) are below detection limits, Al concentrations are within the HPQ, quartz market standard, and average natural abundance; Ti values are high above all three standards in all except one sample, while Na, Ca, K, and Fe values fluctuate, thus classifying one of the samples as high purity quartz and the others as low purity quartz. These veins define tension gashes which usually occur in an echelon arrangem ent covering a large surface area, suggesting that more of such veins probably exist in the Supe area. Consequently, the quality and potential quantity of HPQ veins in this area suggest a high potential for HPQ exploration in the region.
Müller, A., Ihlen, P.M., Wanvik, J.E. and Flem, B. (2007) High-Purity Quartz Mineralisation in Kyanite Quartzites, Norway. Mineralium Deposita, 42, 523-535. https://doi.org/10.1007/s00126-007-0124-8
Haus, R., Prinz, S. and Priess, C. (2012) Assessment of High Purity Quartz Resources. In: Götze, J. and Möckel, R., Eds., Quartz: Deposits, Mineralogy and Analytics, Springer, Heidelberg, 29-51. https://doi.org/10.1007/978-3-642-22161-3_2
SINOSI Group. http://www.sinosi.com
High Purity Quartz Market Insights, 2031 https://www.transparencymarketresearch.com/high-purity-quartz-market.html
Haus, R. (2005) High Demands on High Purity. Industrial Minerals, 10, 62-67.
Haus, R. (2010) High-Purity Quartz Resources. Proceedings of the PHOTON’s 8th Solar Silicon Conference, Stuttgart, 27 April 2010.
Santos, F.M., Fujiwara, E., Schenkel, E.A., Enzweiler, J. and Suzuki, K.C. (2014) Quartz Resource in the Serra de Santa Helena Formation, Brazil: A Geochemical and Technological Study. Journal of South American Earth Sciences, 56, 328-338. https://doi.org/10.1016/j.jsames.2014.09.017
Harben, P.W. (2002) The Industrial Mineral Handy Book—A Guide to Markets, Specifications and Prices. 4th Edition, Industrial Mineral Information, Worcester Park.
Kedia, A.C. (2011) The Geology of Supe and Its Environs, GLY 498 Project. University of Buea, Cameroon.
Njome, M.S. (2000) Structural Features of the Migmatite-Gneiss/Mylonite Association of the Tombel Graben, South Western Cameroon. University of Buea, Cameroon.
Njome, M.S., Suh, C.E, and Ghogomu, R.T. (2000) A Micro Structural Approach to Interpreting the Structural Setting of the Tombel Graben, South Western Cameroon. GeoActa, 2, 181-200.
Sigue, C., Moundi, A., Suh, C.E., dos Santos, M.F.M., Fujiwara, E., Suzuki, C.K. and Ndema-Mbongue, J.L. (2020) Assessment of Shear Zone-Derived Quartz from the Etam Area, Southwest Cameroon as Potential High-Purity Quartz Resource: Petrography, Geochemistry and Technological Studies. Carlos Kenichi Suzuki, 2, Article No. 551. https://doi.org/10.1007/s42452-020-2301-7
Toteu, S., Van Schmus, W., Penaye, J. and Michard, A. (2001) New U–Pb and Sm–Nd Data from North-Central Cameroon and Its Bearing on the Pre-Pan African History of Central Africa. Precambrian Research, 108, 45-73. https://doi.org/10.1016/S0301-9268(00)00149-2
Ngako, V., Affaton, P. and Njonfang, E. (2008) Pan-African Tectonics in Northwestern Cameroon: Implication for the History of Western Gondwana. Precambrian Research, 14, 509-522. https://doi.org/10.1016/j.gr.2008.02.002
Ngako, V., Affaton, P., Nnange, J.M. and Njanko, T. (2003) Pan-African Tectonic Evolution in Central and Southern Cameroon: Transpression and Transtension during Sinistral Shear Movements. Journal of African Earth Sciences, 36, 207-214. https://doi.org/10.1016/S0899-5362(03)00023-X
Njome, M.S. and Suh, C.E. (2005) Tectonic Evolution of the Tombel Graben Basement, Southwestern Cameroon. Episodes, 28, 37-41. https://doi.org/10.18814/epiiugs/2005/v28i1/004
Kamdem, J.B., Kraml, M., Keller, J. and Henjes-Kunst, F. (2002) Cameroon Line Magmatism: Conventional K/Ar and Single-Crystal Laser 40Ar/39Ar Ages of Rocks and Minerals from the Hossere Nigoanorogenic Complex, Cameroon. Journal of African Earth Sciences, 35, 99-101. https://doi.org/10.1016/S0899-5362(02)00002-7
Suh, C.E. and Lehmann, B. (2003) Morphology and Electron-Probe Microanalysis of Residual Gold-Grains at Dimako, Southeast Cameroon. Neues Jahrbuch für Mineralogie, Monatshefte, 2003, 255-275. https://doi.org/10.1127/0028-3649/2003/2003-0255
Montigny, R., Ngounouno, I. and Deruelle, B. (2004) Ages K-Ar des roches magmatiques du fosse de Garoua (Cameroun): Leur place dans le cadre de la ligne du Camerounî. Comptes Rendus Geoscience, 336, 1463-1471. https://doi.org/10.1016/j.crte.2004.08.005
Nkouathio, D. (1997) Le volcanisme recent du graben de Tombel (province du littoral et du sud-ouest, Cameroun): Volcanologie, geochimie, petrologie et valeuragricole. Universite de Yaounde I, Cameroun.
Lamilen, B.D., Moundi, A., Moupou, M. and Minyem, D. (1998) Control structurel du socledans la morphologie du massif anorogenique du Koupe (Ligne du Cameroun). Geosci. au Cameroun, 1, 191-196.
Aka, F.T. (2009) Volcanism along the Cameroon Volcanic Line. Journal of African Earth Sciences, 55, 175-184. https://doi.org/10.1016/j.jafrearsci.2009.04.002
Djouka-Fonkwe, M.L., Schulz, B., Schüssler, U., Tchouankoué, J.P. and Nzolang, C. (2008) Geochemistry of the Bafoussam Pan-African I- and S-Type Granitoids in Western Cameroon. Journal of African Earth Sciences, 50, 148-167. https://doi.org/10.1016/j.jafrearsci.2007.09.015
De Witt, J., Stankiewicz, J. and Reeves, C. (2008) Restoring Pan-African-Brasiliano Connections: More Gondwana Control, Less Trans-Atlantic Connetion. Geological Society, London, Special Publications, 294, 399-412. https://doi.org/10.1144/SP294.20
Njiekak, G., Dörr, W., Tchouankoué, J.-P. and Zulauf, G. (2008) U–Pb Zircon and Microfabric Data of (Meta) Granitoids of Western Cameroon: Constraints on the Timing of Pluton Emplacement and Deformation in the Pan-African Belt of Central Africa. Lithos, 102, 460-477. https://doi.org/10.1016/j.lithos.2007.07.020
Mosoh Bambi, C.K., Suh, C.E., Nzenti, J.P. and Frimmel, H.E. (2012) UMo Mineralization Potential in Pan-African Granites, Southwestern Cameroon: Economic Geology of the Ekomédion PROSPECT. Journal of African Earth Sciences, 65, 25-45. https://doi.org/10.1016/j.jafrearsci.2012.01.001
Mosoh Bambi, C.K., Frimmel, H.E., Zeh, A., Suh, C.E. (2013) Age and origin of Pan-African Granites and Associated U–Mo Mineralization at Ekomédion, Southwestern Cameroon. Journal of African Earth Sciences, 88, 15-37. https://doi.org/10.1016/j.jafrearsci.2013.08.005
Kouske, A.P., Suh, C.E., Ghogomu, R.T. and Ngako, V. (2012) Na-Metasomatism and Uranium Mineralization during a Two-Stage Albitization at Kitongo, Northern Cameroon: Structural and Geochemical Evidence. International Journal of Geosciences, 3, 258-279. https://doi.org/10.4236/ijg.2012.31028
Suh, C.E., Lehmann, B. and Mafany, G.T. (2006) Geology and Geochemical Aspects of Lode Gold Mineralization at Dimako-Mboscorro, SE Cameroon. Geochemistry: Exploration, Environment, Analysis, 6, 295-309. https://doi.org/10.1144/1467-7873/06-110
Fon, N. (2006) Tourmalinization in the Betare Oya Gold District East Cameroon Gold Field. University of Buea, Cameroon.
Kyle, J.R., Mote, A.S. and Ketcham, R.A. (2008) High Resolution X-Ray Computed Tomography Studies of Grasberg Porphyry Cu-Au Ores, Papua, Indonesia. Mineralium Deposita, 43, 519-532. https://doi.org/10.1007/s00126-008-0180-8
Mees, F., Swennen, R., Geet, M. and Van Jacobs, P. (2003) Applications of X-Ray Computed Tomography in the Geosciences. Geological Society, London, Special Publications, 215, 1-6. https://doi.org/10.1144/GSL.SP.2003.215.01.01
Müller, A., Herrington, R., Armstrong, R., Seltmann, R., Kirwin, D.J., Stenina, N.G. and Kronz, A. (2010) Trace Elements and Cathodoluminescence of Quartz in Stockwork Veins of Mongolian Porphyry-Style Deposits. Mineralium Deposita, 45, 707-727. https://doi.org/10.1007/s00126-010-0302-y
Müller, A., Wanvik, J.E. and Ihlen, P.M. (2012) Petrological and Chemical Characterisation of High-Purity Quartz Deposits with Examples from Norway. In: Götze, J. and Möckel, R., Eds., Quartz: Deposits, Mineralogy and Analytics, Springer, Berlin, Heidelberg, 71-118. https://doi.org/10.1007/978-3-642-22161-3_4
Moore, P. (2005) High-Purity Quartz. Industrial Minerals, 455, 53-57.
Henry, D.J. and Guidotti, C.V. (1985) Tourmaline as a Petrogenetic Indicator Mineral: An Example from the Staurolite-Grade Metapelites of NW Maine. American Mineralogist, 70, 1-15.
Hawthorne, F.C. and Henry, D.J. (1999) Classification of the Minerals of the Tourmaline Group. European Journal of Mineralogy, 11, 201-215. https://doi.org/10.1127/ejm/11/2/0201
Henry, D.J., Novák, M.C., Hawthorne, F.C., Ertl, A., Dutrow, B.L., Uher, P. and Pezzotta, F. (2011) Nomenclature of the Tourmaline-Super Group Minerals. American Mineralogist, 96, 895-913. https://doi.org/10.2138/am.2011.3636
Suh, C.E., Cabral, A.R., Shemang, E.M., Mbinkar, L. and Mboudou, G.G.M. (2008) Two Contrasting Iron Deposits in the Precambrian Mineral Belt of Cameroon, West Africa. Exploration and Mining Geology, 17, 197-207. https://doi.org/10.2113/gsemg.17.3-4.197
Ngako, V., Njonfang, E., Aka, F.T., Affaton, P., Nnange, J.M. (2006) The North-South Paleozoic to Quaternary Trend of Alkaline Magmatism from Niger-Nigeria to Cameroon: Complex Interaction between Hotspots and Precambrian faults. Journal of African Earth Sciences, 45, 241-256. https://doi.org/10.1016/j.jafrearsci.2006.03.003
Meinhold, G., Anders, B., Kostopoulos, D. and Reischmann, T. (2008) Rutile Chemistry and Thermometry as Provenance Indicator: An Example from Chios Island, Greece. Sedimentary Geology, 203, 98-111. https://doi.org/10.1016/j.sedgeo.2007.11.004
Meinhold, G. (2010) Rutile and Its Applications in Earth Sciences. Earth-Science Reviews, 102, 1-28. https://doi.org/10.1016/j.earscirev.2010.06.001
Götze, J. (2010) Chemistry, Textures and Physical Properties of Quartz Geological Interpretation and Technical Application. Mineralogical Magazine, 3, 645-671. https://doi.org/10.1180/minmag.2009.073.4.645
Carruzzo, S., Clarke, D.B., Pelrine, K.M. and MacDonald, M.A. (2006) Texture, Composition, and Origin of Rutile in the South Mountain Batholith, Nova Scotia. The Canadian Mineralogist, 44, 715-729. https://doi.org/10.2113/gscanmin.44.3.715
Cherniak, D.J., Watson, E.B. and Wark, D.A. (2007) Ti Diffusion in Quartz. Chemical Geology, 236, 65-74. https://doi.org/10.1016/j.chemgeo.2006.09.001
Adachi, T., Hokada, T., Osanai, Y., Toyoshima, T., Baba, S. and Nakano, N. (2010) Titanium Behavior in Quartz during Retrograde Hydration: Occurrence of Rutile Exsolution and Implications for Metamorphic Processes in the Sør Rondane Mountains, East Antarctica. Polar Science, 3, 222-234. https://doi.org/10.1016/j.polar.2009.08.005
Deksissa, D.J. and Koeberl, C. (2002) Geochemistry and Petrography of Gold-Quartz-Tourmaline Veins of the Okote Area, Southern Ethiopia: Implications for Gold Exploration. Mineralogy and Petrology, 75, 101-122. https://doi.org/10.1007/s007100200018