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Yellow Mn-Rich Tourmaline From The Canary Mining Area, Zambia

2007; Gemological Institute of America; Volume: 43; Issue: 4 Linguagem: Inglês

10.5741/gems.43.4.314

2376-4473

Brendan M. Laurs, William B. Simmons, George R. Rossman, Eric A. Fritz, John I. Koivula, Björn Anckar, Alexander U. Falster,

Crystal Structures and Properties

near the border with Malawi.However, there are no gem-bearing pegmatites in the Chipata area, and the actual locality is the Lundazi District, located ~160 km to the north (as indicated by Rossman and Mattson, 1986).Since the location was kept secret for many years, some more recent reports have named the source locality as Mozambique (Wong, 2001) or Malawi (e.g., Boehm, 2001;Federman, 2002).The enriched manganese content of this Zambian elbaite has led some authors to refer to it as tsilaisite (Schmetzer and Bank, 1983, 1984b; Kane, 1986).a While in Zambia in August 2004, three of the authors (BML, WBS, and BA) visited the most important deposit for yellow elbaite, known as the Canary mining area, to gather information on the geology and production of this unusual material, and to obtain samples for gemological characterization and chemical analysis.Two days were spent at