Calclacite
calcium chloride acetate pentahydrate, organic mineral

Calclacite is a mineral and an organic compound. Its name references the components, which are calcium ions (Ca2+), chloride (Cl−) and acetate CH3COO−.
Characteristics
Calclacite is an organic compound with chemical formula Ca(CH3COO)Cl·5H2O. It forms crystals in the monoclinic system, with silky hairlike efflorescences up to 4 cm long.
According to the Nickel–Strunz classification, calclacite is an organic acid salt and occurs with formicaite (calcium formate), acetamide, dashkovaite (magnesium acetate), paceite (calcium copper acetate) and hoganite (copper acetate). It is white and its hardness on the Mohs scale is 1.5.
Formation
Calclacite is formed on samples of rocks, fossils, and on fragments of ceramics, by the action of acetic acid produced from the oak of the storage cabinets.
The public source identifies “Calclacite” as calcium chloride acetate pentahydrate, organic mineral. This brief keeps that definition visible, then builds a research path around Calclacite, calcium and chloride.
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This entry incorporates text from “Calclacite” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.