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@article{1121998, author = {Breiter, Karel and Gardenová, Nina and Vaculovič, Tomáš and Kanický, Viktor}, article_number = {4}, doi = {http://dx.doi.org/10.1180/minmag.2013.077.4.01}, keywords = {topaz; germanium; gallium; LA-ICP-MS; Krusne Hory Mts.; Erzgebirge}, language = {eng}, issn = {0026-461X}, journal = {Mineralogical Magazine}, title = {Topaz as an important host for Ge in granites and greisens}, volume = {77}, year = {2013} }
TY - JOUR ID - 1121998 AU - Breiter, Karel - Gardenová, Nina - Vaculovič, Tomáš - Kanický, Viktor PY - 2013 TI - Topaz as an important host for Ge in granites and greisens JF - Mineralogical Magazine VL - 77 IS - 4 SP - 403-417 EP - 403-417 SN - 0026461X KW - topaz KW - germanium KW - gallium KW - LA-ICP-MS KW - Krusne Hory Mts. KW - Erzgebirge N2 - The composition of topaz from different granites and greisen in the Krusne Hory/Erzgebirge area was investigated using electron microprobe analysis (EMPA) and Laser Ablation Inductively Coupled Plasma Mass Spectrometry (LA-ICP-MS). All topaz grains are rich in F (17.9-19.8 wt.%, 1.73-1.90 a.p.f.u.) and the most important minor/trace elements are P, Ge and Ga. Contents of P up to 1 wt.% P2O5 (0.025 a.p.f.u.) were found in topaz from the strongly peraluminous P-rich magmatic systems at Podlesi. Regardless of genetic type, topaz from granites typically contains 50-100 ppm Ge. The greatest amounts (up to 204 ppm Ge) were found in topaz from quartz-topaz-apatite greisen in Krasno. In fractionated granites and greisens, topaz is calculated to contain 23-87% of the bulk Ge content in the rock. In contrast, topaz does not concentrate Ga. The Ga content of topaz (typically 5-35 ppm in S-type granites, <10 ppm Ga in A-type granites) is usually smaller than the bulk Ga content of the rock. In addition, up to 16 ppm Sc, 23 ppm Sn and >400 ppm Fe may be present. ER -
BREITER, Karel, Nina GARDENOVÁ, Tomáš VACULOVIČ a Viktor KANICKÝ. Topaz as an important host for Ge in granites and greisens. \textit{Mineralogical Magazine}. 2013, roč.~77, č.~4, s.~403-417. ISSN~0026-461X. Dostupné z: https://dx.doi.org/10.1180/minmag.2013.077.4.01.
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