 | | Journal (article/letter/editorial) | | 3749/canmin.49.1.301 A SURVEY OF Mn-RICH YELLOW TOURMALINE FROM WORLDWIDE LOCALITIES AND IMPLICATIONS FOR...California 92008, USA Abstract Yellow to yellow-green tourmaline was analyzed from granitic pegmatites in Zambia...the United States, Nepal, and the Democratic Republic of the Congo. Yellow tourmaline is predominantly...09 wt.% FeO). Relative to typical pale-colored tourmaline, all have elevated TiO2 (average 0.28 wt.%)....Increasing Fe content progressively darkens yellow tourmaline toward hues of green, blue and black; increasing |  | | Book (edition) | | Ruby and Sapphire Beryl Chrysoberyl Spinel Topaz Tourmaline The Garnets Feldspar Group Zircon Peridot 69...extensive fields in the prophetically named Kimberley district of Western Australia promise to be of world importance...feldspar and slightly smoky quartz, (b) Very coarse pegmatite at least 8 m (26 ft) thick at Urubu, near Araçuai...Gerais, Brazil. Fine pink and green gem-quality tourmaline has been mined here 10 Rocks and the Processes...and elsewhere are famous for carrying gold, and pegmatite veins may contain minerals with rare elements |
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