Russian Mineralogical Society
Fedorov session 2016
High-temperature behaviour of synthetic analogue of lindgrenite

RMS-DPI code:  2016-1-15-0
Scientific session:  1. Mineralogical crystallography, crystal chemistry and new minerals
Author listing:  Ismagilova R.M., Zhitova E.S., Zolotarev A.A., Jr., Krivovichev S.V.
Principal author:  Ismagilova Rezeda Marsovna
Language:  Russian
Abstract - Summary 
(short description):
The product of hydrothermal synthesis was determined as analogue of lindgrenite. The compound crystallizes in space group P21/n, a = 5.3941(2), b = 14.0249(4), c = 5.6095(2) Å, β = 98.519(3)˚, V = 419.68(2) Å3. The DSC and TGA analyses revealed mass loss for 3.94 % at = 200-400 ˚ that was assigned to the dehydroxylation and for 4.15 % at = 800-850 ˚ that was attributed to the decomposition. High-temperature X-ray diffraction indicated the phase transformation at = 350 ˚ from synthetic lindgrenite Cu3MoO4(OH)2 to analogue of cupromolybdite Cu3MoO9 accompanied by dehydroxylation. The main coefficients of thermal expansion for lindgrenite (×10-6) are: α11 = α22 = 6, α33 = 26. The main coefficients of thermal expansion for cupromolybdite (×10-6) are α11 = 15, α22 = 8, α33 = 5.
Keywords: crystal chemistry, high temperature behaviour, lindgrenite, cupromolybdite
 
Date of presentation:  10/10/2016
Presentation Place:  Mining University, foyer of the Assembly Hall
 
RMS-DPI code:  2016-1-15-0
File of proceedings 
(PDF): 
 125 K
Status:  preprint
Accepted:  28/08/2016
Contact author(s):  Ismagilova, Rezeda Marsovna

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