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A mineral sometimes found as an efflorescence on archaeological ceramics that are stored in wooden cases, particularly those made of oak.\. Calclacite is dual calcium salt of chloride and acetic acid. It may be formed from the interaction of acid vapors from the wood storage cases with the objects and chloride salts acquired during burial. Its composition is CH3CO2CaCl-5H2O.

Synonyms and Related Terms

calcium acetate chloride pentahydrate

Resources and Citations

  • E.FitzHugh, R.Gettens, "Calclacite and Other Efflorescent Salts on Objects Stored in Wooden Museum Cases" in Science and Archaeology, R. Brill (ed.), MIT Press, Cambridge, MA, 1971.
  • A.B.Paterakis "A Preliminary Study of Salt Efflorescence in the Collection of the Ancient Agora, Athens, Greece" in ICOM Preprints, Los Angeles, 1990. p.675-679.

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