A PRELIMINARY STUDY OF THE COLEMANITE-RICH TUFF LAYER FROM THE SOURIDES AREA, KARLOVASSI BASIN, SAMOS ISLAND, HELLAS


N. Kantiranis
A. Filippidis
M. Stamatakis
E. Tzamos
A. Drakoulis
Résumé

Representative 3 kg sample of a colemanite-bearing tuffaceous layer from Sourides village of Samos Island have been investigated for its mineralogical and chemical composition using Light Microscopy, X-Ray Powder Diffraction and Atomic Adsorption Spectroscopy methods. The studied sample contains 68 wt. % colemanite, consisting of 31.1 wt. % B203 and 28.4 wt. % CaO. The mineralogical and chemical composition of the sample, after calcination could produce a concentrate containing 43-44 wt. % B203, fulfill at least one of the commercial specifications for the calcined colemanite concentrates.

Article Details
  • Rubrique
  • Mineralogy-Petrology-Geochemistry-Economic Geology
Téléchargements
Les données relatives au téléchargement ne sont pas encore disponibles.
Références
Alonso, R.N., and Helvaci, C, 1988. Mining and concentration of borates in Argentina, Proc. 2nd Inter. Mineral Proc. Symp., Izm ir, 301-305.
Bonel, K.A., and Chapman, G.R., 2005. World metals & Minerals Review 2005, Metal Bulletin, London, 312 pp.
Harben, W.P., 2002. The industrial minerals handybook, A guide to markets, specifications & prices, 4th Edn. Blackwood UK, Pensord, 409pp.
Helvaci, C, 1984. Occurrence of rare borate minerals Veatchite-A, Tunnelite, Terrugite and Cahnite in the Emet borate deposits, Mineralium Deposita, 19, 217-226.
Kantiranis, N., Stamatakis, M, Filippidis, Α., and Squires, C, 2004. The uptake ability of the clinoptilolitic tuffs of Samos island, Greece, Bull. Geol. Soc. Greece, 36, 89-96.
Kistler, B., and Helvaci, C, 1994. Boron and Borates, In D.D. Carr, (ed.), Industrial Minerals and rocks, 171-186, Ann Arbor, Michigan, Braun-Brumfield, 1196pp.
Lyday, P.A., 1992. History of boron production and processing, Industrial minerals, December, 19-35.
Ozal, A.A., 1977. Plate tectonics and the process of volcanogenic-sedimentary formation of Boron, International Geology Review, 20/6, 692-698.
Stamatakis, G.M., 1986. Boron distribution in thermal springs, marine evaporites and Cenozoic sedimentary and volcanic rocks of Greece, PhD Thesis, University of Athens, 465pp.
Stamatakis, G.M., 1989a. Authigenic silicates and silica polymorphs in the Miocene salinealkaline deposits of the Karlovassi basin, Samos, Greece, Economic Geology, 84, 788-798.
Stamatakis, G.M., 1989b. A boron-bearing potassium feldspar in volcanic ash and tuffaceous rocks from Miocene lake deposits, Samos Island, Greece, American Mineralogist, 74, 230-235.
Stamatakis, G.M., and Economou, S.G., 1991. A colemanite and ulexite occurrence in a Late Miocene saline-alkaline lake of West Samos Island, Greece, Economic Geology, 86/1, 166-172.
Theodoropoulos, D., 1979. Geological map of Greece. Sheet: Neon Karlovassi, scale 1:50.000. IGME, Athens.
Articles les plus lus par le même auteur ou la même autrice