Document Type
Article
Publication Date
4-1-2016
Abstract
© 2015 E. Schweizerbart'sche Verlagsbuchhandlung. Fluor-schorl, NaFe2+3Al6Si6O18(BO3)3(OH)3F, is a new mineral species of the tourmaline supergroup from alluvial tin deposits near Steinberg, Zschorlau, Erzgebirge (Saxonian Ore Mountains), Saxony, Germany, and from pegmatites near Grasstein (area from Mittewald to Sachsenklemme), Trentino, South Tyrol, Italy. Fluor-schorl was formed as a pneumatolytic phase and in high-temperature hydrothermal veins in granitic pegmatites. Crystals are black (pale brownish to pale greyish-bluish, if distance (r2 = 0.93). This correlation indicates that Fe2+-rich tourmalines from the investigated localities clearly tend to have a F-rich or F-dominant composition. A further strong positive correlation (r2= 0.82) exists between the refined F content and the Y-W (F,OH) distance, and the latter may be used to quickly estimate the F content.
Publication Source (Journal or Book title)
European Journal of Mineralogy
First Page
163
Last Page
177
Recommended Citation
Ertl, A., Kolitsch, U., Dyar, M., Meyer, H., Rossman, G., Henry, D., Prem, M., Ludwig, T., Nasdala, L., Lengauer, C., Tillmanns, E., & Niedermayr, G. (2016). Fluor-schorl, a new member of the tourmaline supergroup, and new data on schorl from the cotype localities. European Journal of Mineralogy, 28 (1), 163-177. https://doi.org/10.1127/ejm/2015/0027-2501