Gem-quality transparent diaspore (zultanite) in bauxite deposits of the İlbir Mountains, Menderes Massif, SW Turkey

Mineralogical characteristics of unusual “Anatolian” diaspore (zultanite) crystals from the İlbirdağı diasporite deposit, Turkey

“…In addition, macroscopic muscovite, chloritoid, donbassite, specular-hematite, ilmenite, and goethite were deposited, many as crystals, with a late-stage deposition of calcite crystals occurring last (Ediger, 1980;Lüle, 1998;Misantoni, 2007;Hatipoglu et al, in press). After the mineral diaspore [AlO(OH)] was recognized as early as the 1800s (Back and Mandarino, 2008), many diaspore-bearing deposits and localities that contained diaspore crystals, characterized by their unattractive opaque or translucent appearance, have been reported as being of both metamorphic and hydrothermal origin (Hass, 1972;Keller, 1978;Hill, 1979;Klug and Farkas, 1981;Hemingway et al, 1989;Tsuchida and Kodaira, 1990;Mao et al, 1994;Perrotta, 1998;Kloprogge et al, 2002;Löffler and Mader, 2004).…”

Al(Fe,Ti,Si)-mobility and secondary mineralization implications: A case study of the karst unconformity diasporite-type bauxite horizons in Milas (Muğla), Turkey

“…4) and associated mineralization yields, such as muscovite, hematite, ilmenite, goethite and chloritoid varies from place to place, particularly from north-northeast to south-southeast (Hatipoglu et al, 2010a). It is evident that the ideal structural and chemical conditions only occurred in the diasporite-type upper bauxite horizons in the Küçükçamlık and Büyükçamlık hills of the _ Ilbir Mountains (Fig.…”

“…Identification of the microscopic mineral species found in both the unaltered uniform and leopard metabauxite ores and the altered uniform and leopard bauxite ores in the underground galleries of the Küçükçamlık and Büyükçamlık bauxite mines of the metabauxite deposit in the _ Ilbir Mountains(Hatipoglu et al, 2010a).…”

Authentic Semi-precious and Precious Gemstones of Turkey: Special Emphasis on the Ones Preferred for Prayer Beads

“…2). In addition to the metabauxites, diaspore Authentic Semi-precious and Precious Gemstones of Turkey occurrences are also reported in laterites and Al-rich clays, in recrystallized limestones, with corundum, in some alkali pegmatites as late stage hydrothermal mineral, and in magmatic rocks as a result of recrystallization of Al-rich xenoliths (Hatipoğlu et al 2010b;Kumbasar and Aykol 1993). However, they hardly grow into gem size and quality.…”