A Raman and infrared spectroscopic study of Ca2+ dominant members of the mixite group from the Czech Republic

作者：Cejka Jiri; Sejkora Jiri; Plasil Jakub; Keeffe Eloise C; Bahfenne Silmarilly; Palmer Sara J; Frost Ray L^*

来源：Journal of Raman Spectroscopy, 2011, 42(5): 1154-1159.

DOI：10.1002/jrs.2817

• zalesiite
• calciopetersite
• mixite group minerals
• arsenates
• phosphates
• Raman spectroscopy
• infrared spectroscopy
• molecular water
• hydroxyl ions
• hydrogen bond O-H center dot center dot center dot O lengths

The minerals of the mixite group - zalesiite CaCu6[(AsO4)(2)(AsO3OH)(OH)(6)]center dot 3H(2)O from abandoned uranium deposit Zalesi,Czech Republic and calciopetersite CaCu6[(PO4)(2)(PO3OH)(OH)(6)]center dot 3H(2)O from a quarry near Domasov na Bystrici, northern Moravia, Czech Republic - were studied by Raman and infrared spectroscopy. The observed bands were assigned to the stretching and bending vibrations of (AsO4)(3-) and (AsO3OH)(2-) ions in zalesiite, and (PO4)(3-) and (PO3OH)(2-) in calciopetersite, and to molecular water, hydroxyl ions, and Cu-(O,OH) units in both minerals. O-H center dot center dot center dot O hydrogen-bond lengths in zalesite and calciopetersite structures were calculated with Libowitzky's empirical relation.

• 出版日期2011-5