Results 41 to 50 of about 70 (65)
Some of the next articles are maybe not open access.
The thermodynamic properties of bastnäsite-(Ce) and parisite-(Ce)
Chemical Geology, 2015Abstract The rare earth elements (REE) are critical metals that play a major role in emerging high technology and green industries. The light (L)REE occur dominantly in fluorocarbonate minerals and consequently information on the stability of these minerals is essential for a better understanding of the genesis of REE deposits and for the efficient ...
Anthony Williams-Jones, Alexander Gysi
exaly +2 more sources
Determination of six new polytypes in parisite-(Ce) by means of high resolution electron microscopy
Mineralogical Magazine, 2001AbstractThe ultrastructures of parisite-(Ce) from a rare-earth mineral deposit of Sichuan Province, southwest China, have been observed and investigated by selected area electron diffraction (SAED) and high resolution electron microscopy (HREM). Six new polytypes 4H, 10H, 16H, 18R, 24R and 30R were determined in parisite-(Ce), as were their crystal ...
Meng Dawei +3 more
openaire +1 more source
The Canadian Mineralogist, 2001
Five new polytypes of parisite-(Ce) [CaCe2(CO3)(3)F-2] from a rare-carth-mineral deposit within an aegirine-bearing granite pluton in Sichuan Province, southwestern China, were found by HRTEM: 6R(2), 8H, 14H, 36R and 42R. These new polytypes are all long-period ordered stacking structures, which may result from the distribution and the periodic ...
D. Meng, X. Wu, T. Mou, D. Li
openaire +1 more source
Five new polytypes of parisite-(Ce) [CaCe2(CO3)(3)F-2] from a rare-carth-mineral deposit within an aegirine-bearing granite pluton in Sichuan Province, southwestern China, were found by HRTEM: 6R(2), 8H, 14H, 36R and 42R. These new polytypes are all long-period ordered stacking structures, which may result from the distribution and the periodic ...
D. Meng, X. Wu, T. Mou, D. Li
openaire +1 more source
The crystal structure of parisite-(Ce), Ce 2 CaF 2 (CO 3 ) 3
American Mineralogist, 2000The crystal structure of parisite–(Ce) was solved and refined to R = 0.044, Rw = 0.037 using three–dimensional X–ray diffraction data (XRD). In contrast to the putative hexagonal cell, weak XRD maxima on precession films demonstrate that the parisite–(Ce) is monoclinic with a space group C 2/ c or Cc .
Yunxiang Ni +2 more
openaire +1 more source
Depression behavior and mechanism of sodium silicate on bastnaesite and parisite flotation
Colloids and Surfaces A: Physicochemical and Engineering Aspects, 2021Zhao Cao, Yongdan Cao
exaly
In Situ U–Th–Pb Dating of Parisite: Implication for the Age of Mineralization of Colombian Emeralds
Minerals (Basel, Switzerland), 2022, Uwe Altenberger, Yue-Heng Yang
exaly
The parisite–(Ce) enigma: challenges in the identification of fluorcarbonate minerals
Mineralogy and Petrology, 2020Radek Skoda +2 more
exaly