Abstract
The formation of calcite, aragonite, dolomite, hydromagnesite, and nesquehonite in speleothems of a small cave within dolostone may be compared with the formation of these carbonate minerals in much larger environments in which evaporation exceeds precipitation (salt lakes, tropical lagoons, sebkhas etc...). In all cases the formation and diagenetic alteration is mainly governed by the Mg/Ca-ratio of the solutions, from which precipitation (or transformation) takes place.
The certain occurrence of monohydrocalcite in the speleothems and in technical incrustations lead to the conclusion, that this very rare mineral precipitates from solutions which are transported as aerosols.
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Fischbeck, R., Müller, G. Monohydrocalcite, hydromagnesite, nesquehonite, dolomite, aragonite, and calcite in speleothems of the Fränkische Schweiz, Western Germany. Contr. Mineral. and Petrol. 33, 87–92 (1971). https://doi.org/10.1007/BF00386107
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DOI: https://doi.org/10.1007/BF00386107