THEORETICAL EQUILIBRIUM AND GROWTH-MORPHOLOGY OF ANHYDRITE (CASO4) CRYSTALS

被引：16

作者：

AQUILANO, D

RUBBO, M

CATTI, M

PAVESE, A

UGLIENGO, P

机构：

[1] UNIV TURIN,DIPARTIMENTO SCI MINERAL & PETROL,I-10125 TURIN,ITALY

[2] UNIV MILAN,DIPARTIMENTO CHIM FIS & ELETTROCHIM,I-20133 MILAN,ITALY

[3] UNIV TURIN,DIPARTIMENTO CHIM INORGAN CHIM FIS & MAT,I-10125 TURIN,ITALY

来源：

JOURNAL OF CRYSTAL GROWTH | 1992年 / 125卷 / 3-4期

关键词：

D O I：

10.1016/0022-0248(92)90292-Q

中图分类号：

O7 [晶体学];

学科分类号：

0702 ; 070205 ; 0703 ; 080501 ;

摘要：

Theoretical equilibrium and growth morphology of CaSO4 (anhydrite) are obtained by applying the Hartman-Perdok method and computing surface and attachment energies with a Born interatomic potential (electrostatic + dispersive + exponential repulsive terms). Dispersive coefficients derive from experimental refractivity data and the other parameters have been fitted to structural and elastic properties of the anhydrite crystal. A comparison is made with the morphology of natural samples, where the three fundamental pinacoids {100}, {010} and {001} prevail on other S forms. Finally the equilibrium shape of 2D nuclei which can form on F faces is calculated.

引用

页码：519 / 532

页数：14

共 28 条

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AQUILANO D, 1986, J CRYST GROWTH, V74, P20

[2]

AQUILANO D, UNPUB THEORETICAL EQ

[3]

AQUILANO D, 1992, IN PRESS J CRYSTAL G

[4]

Binkley J. S, 1982, GAUSSIAN 82