Shabanian, N., Khalili, M., Davoudian, A. R. & Mohajjel, M.: Petrography and geochemistry of mylonitic granite from Ghaleh-Dezh, NW Azna, Sanandaj-Sirjan zone, Iran (With 11 fi gures and 1 table) 233-248 Gottesmann, W., Gottesmann, B. & Seifert, W.: Sphalerite composition and ore genesis at the Tumurtijn-ovoo Fe-Mn-Zn skarn deposit, Mongolia (With 22 fi gures and 7 tables) 249-280 Bernini, D., Caucia, F. & Boiocchi, M.: Application of the Vis-NIR Avaspec-2048 portable automatic spectrometer to distinguish GEM quality materials (With 12 figures) 281-288 Caucia, F., Ghisoli, C. & Adamo, I.: A study on the characteristics of some C- and CT-opals from Brazil. (With 5 figures and 2 tables) 289-296 Bloise, A., Barrese, E. & Apollaro, C.: Hydrothermal alteration of Ti-doped forsterite to chrysotile and characterization of the resulting chrysotile fibers (With 9 figures and 2 tables) 297-304 Chukanov, N. V., Möckel, S., Sidorenko, G. A. & Zaitsev, V. A.: Arsenuranospathite, Al(UO2)2(AsO4)2F·20H2O: Formula revision and relationships with allied uranyl arsenates and phosphates (With 7 figures and 3 tables) 305-312 Sato, E., Nakai, I., Miyawaki, R. & Matsubara, S.: Crystal structures of alunite family minerals: beaverite, corkite, alunite, natroalunite, jarosite, svanbergite, and woodhouseite (With 5 figures and 8 tables) 313-322 Uysal, I., Zaccarini, F., Sadiklar, M. B., Bernhardt, H.-J., Bigi, S. & Garuti, G.: Occurrence of rare Ru-Fe-Os-Ir-oxide and associated Platinum-group minerals (PGM) in the chromitite of Mugla ophiolite, SW-Turkey (With 8 figures and 3 tables) 323-333 Zaccarini, F., Proenza, J. A., Rudashevsky, N. S., Cabri, L. J., Garuti, G., Rudashevsky, V. N., Melgarejo, J. C., Lewis, J. F., Longo, F., Bakker, R. J. & Stanley, C. J.: The Loma Peguera ophiolitic chromitite (Central Dominican Republic): a source of new platinum group minerals (PGM) species (With 10 figures and 5 tables) 335-349