Nomeclature of the tourmaline-supergroup minerals

• 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
• Web: http://dx.doi.org/10.2138/am.2011.3636
• Doi: http://dx.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