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Dynamic etching of natural rhombohedral calcite cleavage planes
Author(s) -
Mehta B. J.,
Sidpara G. R.
Publication year - 1990
Publication title -
crystal research and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0232-1300
DOI - 10.1002/crat.2170250116
Subject(s) - calcite , chemistry , cleavage (geology) , trigonal crystal system , etching (microfabrication) , morphology (biology) , eccentricity (behavior) , formic acid , growth rate , mineralogy , crystallography , analytical chemistry (journal) , materials science , crystal structure , chromatography , composite material , geometry , organic chemistry , geology , paleontology , mathematics , layer (electronics) , fracture (geology) , political science , law
Dynamic etching of natural rhombohedral calcite cleavage plane in low concentration of monocarboxylic acid (such as formic, acetic and propionic acids) is studied and interesting results are obtained. Eccentricity of rhombic etch pits increase indefinitely as stirring rate increase in low concentration of monocarboxylic acids, whereas peak value of eccentricity is obtained with stirring rate when there is a change in etch pit morphology. Change in etch pit morphology and change in eccentricity with stirring rate is explained with the help of lateral reaction rates along various directions. Eccentricity variation with stirring rate is compared with concentration variation with concentration of different monocarboxylic acids.