Publication details

Oxy-schorl, Na(Fe22+Al)Al6Si6O18(BO3)3(OH)3O, a new mineral from Zlatá Idka, Slovak Republic and Přibyslavice, Czech Republic

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Authors

BAČÍK Peter CEMPÍREK Jan UHER Pavel NOVÁK Milan OZDÍN Daniel FILIP Jan ŠKODA Radek BREITER Karel KLEMENTOVÁ Mariana ĎUĎA Rudolf GROAT Lee

Year of publication 2013
Type Article in Periodical
Magazine / Source American Mineralogist
MU Faculty or unit

Faculty of Science

Citation
Doi http://dx.doi.org/10.2138/am.2013.4293
Field Geology and mineralogy
Keywords tourmaline; oxy-schorl; structure; composition; Slovakia; Czech Republic
Description Oxy-schorl (IMA 2011-011), ideally Na(Fe22+Al)Al6Si6O18(BO3)3(OH)3O, a new mineral species of the tourmaline supergroup, is described from Zlatá Idka, Slovak Republic and Přibyslavice, Czech Republic. Oxy-schorl is derived from schorl end-member by the AlOFe–1(OH)–1 substitution. The studied crystals of oxy-schorl represent two distinct ordering mechanisms: disorder of R2+ and R3+ cations in octahedral sites and all O ordered in the W site (Zlatá Idka), and R2+ and R3+ cations ordered in the Y and Z sites and O disordered in the V and W sites (Přibyslavice).
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