| Chakhmouradian, A. R., Cooper, M. A., Medici, L., Hawthorne, F. C., Adar, F. (2008) FLUORINE-RICH HIBSCHITE FROM SILICOCARBONATITE, AFRIKANDA COMPLEX, RUSSIA: CRYSTAL CHEMISTRY AND CONDITIONS OF CRYSTALLIZATION. The Canadian Mineralogist, 46 (4) 1033-1042 doi:10.3749/canmin.46.4.1033 | Journal (article/letter/editorial) | DOI : 10.3749/canmin.46.4.1033 FLUORINE-RICH HIBSCHITE FROM SILICOCARBONATITE, AFRIKANDA COMPLEX, RUSSIA:...Russia, contains abundant crystals of F-rich hibschite associated with titanite, chlorite, calciocatapleiite...in Al and Fe contents across the crystal. The hibschite contains from 4.2 to 6.0 wt.% F, which is unparalleled...The compositional variation of the Afrikanda hibschite can be described by the formula Grs57–63Kt21–27Fgr8–11Adr0–13...is 10 mol.%. The crystal structure of F-rich hibschite was refined in space group Ia3d to R1 = 2.8%. |
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