Referenza:
▪ Liu, S.-I, Li, G., Peng, M. (2018): Crystal structure analysis of pezzottaite and its implication. Acta Mineralogica Sinica, 2008, 575.
Abstract:
CCD single-crystal X-ray diffractometer was employed to analyze the crystal structure of pezzottaite with space group = R3c. The variation characteristics of c/a ratio of unit cell, which is caused by the regular replacement of Li+ to Be2+ in the structure, has been discussed. In contrast with the detected space group of the crystal, the newly discovered ditrigonal scalenohedral negative crystal inclusions showed the m symmetry of the crystal with space group symmetry R-3c. Our structural analysis of pezzottaite revealed that the previous assumption of the space group (R-3m) of the crystal was incorrect. Further experiments are required to determine the true space group (R-3c or R3c) of pezzottaite and reveal whether it has the symmetrical centre or not.
Crystal structure analysis of pezzottaite and its implication
- Marco E. Ciriotti
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Crystal structure analysis of pezzottaite and its implication
Marco E. Ciriotti
«Things are interesting only in so far as they relate themselves to other things»
«Things are interesting only in so far as they relate themselves to other things»
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