Articles | Volume 35, issue 2
https://doi.org/10.5194/ejm-35-199-2023
https://doi.org/10.5194/ejm-35-199-2023
Research article
 | 
30 Mar 2023
Research article |  | 30 Mar 2023

Cation and anion ordering in synthetic lepidolites and lithian muscovites: influence of the OH ∕ F and Li ∕ Al ratios on the mica formation studied by NMR (nuclear magnetic resonance) spectroscopy and X-ray diffraction

Lara Sulcek, Bernd Marler, and Michael Fechtelkord

Related subject area

Crystal chemistry
Tin weathering experiment set by nature for 300 years: natural crystals of the anthropogenic mineral hydroromarchite from Creussen, Bavaria, Germany
Natalia Dubrovinskaia, Maria Messingschlager, and Leonid Dubrovinsky
Eur. J. Mineral., 34, 563–572, https://doi.org/10.5194/ejm-34-563-2022,https://doi.org/10.5194/ejm-34-563-2022, 2022
Short summary
New secondary phosphate mineral occurrences and their crystal chemistry, at the Hagendorf Süd pegmatite, Bavaria
Erich Keck, Ian E. Grey, Colin M. MacRae, Stephanie Boer, Rupert Hochleitner, Christian Rewitzer, William G. Mumme, A. Matt Glenn, and Cameron Davidson
Eur. J. Mineral., 34, 439–450, https://doi.org/10.5194/ejm-34-439-2022,https://doi.org/10.5194/ejm-34-439-2022, 2022
Short summary
Na-feldspar: temperature, pressure and the state of order
Herbert Kroll, Hans Ulrich Bambauer, and Horst Pentinghaus
Eur. J. Mineral., 32, 427–441, https://doi.org/10.5194/ejm-32-427-2020,https://doi.org/10.5194/ejm-32-427-2020, 2020
Short summary

Cited articles

Alba, M. D., Becerro, A. I., Castro, M. A., and Perdigón, A. C.: High-resolution 1H MAS NMR spectra of 2 : 1 phyllosilicates, Chem. Commun., 37–38, https://doi.org/10.1039/a906577f, 2000. 
Bailey, S. W. and Christie, O.: Three-layer monoclinic lepidolite from Tordal, Norway, Am. Mineral., 63, 203–204, 1978. 
Boukili, B., Robert, J.-L., Beny, J.-M., and Holtz, F.: Structural effects of OH – F substitution in trioctahedral micas of the system: K2O-FeO-Fe2O3-Al2O3-SiO2-H2O-HF, Schweiz. Miner. Petrog., 81, 55–67, 2001. 
Boukili, B., Holtz, F., Beny, J.-M., and Robert, J.-L.: “Fe-F and Al-F avoidance rule” in ferrous-aluminous (OH,F) biotites, Schweiz. Miner. Petrog., 82, 549–559, 2002. 
Černý, P. and Burt, D. M.: Paragenesis, crystallochemical characteristics, and geochemical evolution of the micas in granite pegmatites, Rev. Mineral. Geochem., 13, 257–297, 1984. 
Download
Short summary
Synthetic lepidolites and Li-muscovites were characterised by nuclear magnetic resonance (NMR) spectroscopy and X-ray diffraction. Both Li and F / OH content influence the occurrence of the impurity phases. A solid solution series exists for lepidolites with polylithionite and trilithionite as endmembers but does not between trilithionite and muscovite. NMR investigations indicate there is a preference for incorporating fluorine and OH groups near Li-rich and Al-rich environments, respectively.