Publication details
New occurrence of bosiite in the Řečice pegmatite, Czech Republic
| Title in English | New occurrence of bosiite in e the Řečice pegmatite, Czech Republic |
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| Authors | |
| Year of publication | 2016 |
| Type | Appeared in Conference without Proceedings |
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| Description | Bosiite, ideally NaFe3+3Al4Mg2+2Si6O18(BO3)3(OH)3O is a rare member of the tourmaline supergroup, recently found in Darasun gold deposit, Transbaikal, Russia as a hydrothermal mineral in gold-bearing quartz vein with sulphides. New occurrence of bosiite was discovered on the contact of the elbaite-subtype pegmatite with host migmatite at Řečice, Czech Republic; We provide a brief description of its mineral assemblages and composition. Bosiite is probably result of late hydrothermal alkaline fluid alteration of primary biotite. Hydrothermal fluids brought B2O3, mobilized Na (albite) and oxidized Fe to Fe3+, and removed K, and part of Mg. Occurrence of bosiite is probable in other elbaite pegmatites as well, as their late fluids are frequently alkaline with high a(B2O3). |