Open AccessDETERMINATION OF SUPERSTRUCTURE OF HUANGHOITE
Author(s) -
Qian Jin-Zi,
Fu Ping-Qiu,
Kong You-Hua,
Gong Guo-Hong
Publication year - 1982
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.31.577
Subject(s) - superstructure , diffractometer , trigonal crystal system , crystal structure , lattice (music) , crystallography , materials science , basis (linear algebra) , space group , physics , diffraction , mathematics , x ray crystallography , thermodynamics , optics , chemistry , geometry , acoustics
Huanghoite, BaCe [Fl(CO3)2], a new mineral from China, is a kind of carbonate containing Ba, Ce, F. It belongs to trigonal system. The intensity data are collected with the aid of fully automatic four-circle X-ray diffractometer. The lattice parameters are α=b=5.070(±0.003?), c=38.408(±0.005?); space group is R3m; z=6. More exact determination has been made on the basis of earlier worke, giving the final R=0.041.The relation between superstructure and pseudo-structure of this crystal has been analysed. We compared our results with that of earlier works. Suggestion is made for the correction for similar minerals. Finally, the individual experimental data are discussed.