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On the crystal structure stability of calcite‐type carbonates
Author(s) -
Balarew Chr.,
Markov L.,
Petrov K.
Publication year - 1985
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.2170200813
Subject(s) - calcite , carbonate , octahedron , mineralogy , chemistry , crystallography , crystal structure , geology , organic chemistry
The preparation of carbonates of the bivalent metals (Mg, Ca, Ba, Sr, Mn, Fe, Co, Ni, Cu and Zn) by two methods under ordinary conditions has been investigated. The stability of calcite type carbonates has been discussed. The shortest O—O distance (d* O—O ) between two neighbouring octahedra has been proposed as a criterion for the formation of stable calcite type carbonates. The lower stereochemical boundary of the calcite carbonate stability has been found to be d * O−O ∼ 2.9 Å. The relative stability of carbonates with d O−O * < 2.9 Å (Zn, Co and Ni) has been studied with respect to their isomorphous incorporation into MnCO 3 .