A first approach to the study of the growth properties of epsomite (MgSO4·7H2O) is presented. Particular attention is payed to the growth forms and to epitaxy relations between epsomite and some known habit modifiers. The starting point of the study is the Hartman and Perdok PBC analysis. It proves to be essential for knowing the actual surface profiles. Successively the theoretical growth morphology is given taking into account: the broken-bond model of Wolff and Broder, the energies associated to the hydrogen bonds only, and finally the attachment energies calculated on the basis of the Coulomb potential. Furthermore an analysis of 2D coincidence lattices leads us to the conclusion that a 2D epitaxy of both Na2B4O7·lOH2O and/or Na2SO4·lOH2O on {111} and/or {A figure is presented} forms of epsomite explains the effect of borax and Glauber's salt as habit modifiers. © 1985.
Growth morphology of epsomite (MgSO4·7H2O)
SGUALDINO, Giulio
1985
Abstract
A first approach to the study of the growth properties of epsomite (MgSO4·7H2O) is presented. Particular attention is payed to the growth forms and to epitaxy relations between epsomite and some known habit modifiers. The starting point of the study is the Hartman and Perdok PBC analysis. It proves to be essential for knowing the actual surface profiles. Successively the theoretical growth morphology is given taking into account: the broken-bond model of Wolff and Broder, the energies associated to the hydrogen bonds only, and finally the attachment energies calculated on the basis of the Coulomb potential. Furthermore an analysis of 2D coincidence lattices leads us to the conclusion that a 2D epitaxy of both Na2B4O7·lOH2O and/or Na2SO4·lOH2O on {111} and/or {A figure is presented} forms of epsomite explains the effect of borax and Glauber's salt as habit modifiers. © 1985.I documenti in SFERA sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
