RT Journal Article
T1 Topotaxy relationships in the transformation phosgenite-cerussite
A1 Pina Martínez, Carlos Manuel
A1 Fernández Díaz, María Lourdes
A1 Prieto Rubio, Manuel
AB The crystallization of phosgenite (Pb2ClzCO 3) and cerussite (PbCO 3) has been carried out by counter diffusion in a silica hydrogel at 25°C. The crystallization of both phases is strongly controlled by the pH of the medium. Under certain conditions the physicochemical evolution of the system determines that phosgenite crystals become unstable and transform into cerussite. The transformation is structurally controlled and provides an interesting example of topotaxy. The orientational relationships are (110)ph║[001]cer, (110)ph [100]cer, and (001)ph ║(010)cer. In this paper, a study of the topotactic transformation and the crystal morphology is worked out. The topotactic relationships are interpreted on the ground of geometrical and structural considerations.
PB Elsevier Science B.V.
SN 0022-0248
YR 1996
FD 1996
LK https://hdl.handle.net/20.500.14352/57135
UL https://hdl.handle.net/20.500.14352/57135
LA eng
DS Docta Complutense
RD 14 dic 2025