Nomeclature of the tourmaline-supergroup minerals

Warning

This publication doesn't include Institute of Computer Science. It includes Faculty of Science. Official publication website can be found on muni.cz.

Authors	HENRY Darrell J. NOVÁK Milan HAWTHORNE Frank C. ERTL Andreas DUTROW Barbara L. UHER Pavel PEZZOTTA Federico
Year of publication	2011
Type	Article in Periodical
Magazine / Source	American Mineralogist
MU Faculty or unit	Faculty of Science
Citation
web	http://dx.doi.org/10.2138/am.2011.3636
Doi	https://doi.org/10.2138/am.2011.3636
Field	Geology and mineralogy
Keywords	tourmaline nomenclature
Description	A nomenclature for tourmaline-supergroup minerals is based on chemical systematics using the generalized tourmaline structural formula: XY3 Z6(T6O18)(BO3)3V3W where the common ions at each site are X = Na1+, Ca2+, K1+ and vacancy; Y = Fe2+, Mg2+, Al3+, Li1+, Fe3+ and Cr3+; Z = Al3+, Fe3+, Mg2+ and Cr3+; T = Si4+, Al3+ and B3+; B = B3+; V = OH1- and O2-; and W = OH1-, F1- and O2-. Most compositional variability occurs at the X, Y, Z, W and V sites.
Related projects:	Chemical composition and structural order of natural tourmalines - geochemical versus crystal-structural constraints