Alchemy Alphabet: CHALK (Latin: Creta), carbonate rock, form of Limestone composed of Calcite. Calcium carbonate: Chemical formula=[CaCO₃].

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Alchemy Alphabet: CHALK (Latin: Creta), carbonate rock, form of Limestone composed of Calcite. Calcium carbonate: Chemical formula=[CaCO₃]. Alchemical sign, Medieval symbol.

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Location: Czech Republic
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