Compositional trends in tourmaline from intragranitic NYF pegmatites of the Třebíč Pluton, Czech Republic; electron microprobe, Mössbauer and LA-ICP-MS study

• Authors: NOVÁK Milan; ŠKODA Radek; FILIP Jan; MACEK Ivo; VACULOVIČ Tomáš
• Year of publication: 2011
• Type: Article in Periodical
• Magazine / Source: Canadian Mineralogist
• MU Faculty or unit: Faculty of Science
• Doi: https://doi.org/10.3749/canmin.49.1.000
• Field: Geology and mineralogy
• Keywords: tourmalines compositional trends substitution mechanisms NYF pegmatites Třebíč Pluton
• Description: Tourmalines (dravite-schorl-uvite-povondraite) from intragranitic pegmatites of the Třebíč Pluton (porphyric, amphibole-biotite melasyenite to quartz melasyenite-melagranite) were examined using electron microprobe, Mössbauer spectroscopy and laser ablation inductively coupled plasma mass spectroscopy (LA-ICP-MS). Black tourmaline occurs in several distinct morphological, paragenetic and textural types with very high variability in zoning; however, the morphological types of tourmaline do not differ in the chemical composition. Tourmalines generally show two trends distinct for the allanite-type and euxenite-type pegmatites and for the euxenite-type pegmatite Klučov I.

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