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Pentahydrocalcite

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Formula:
CaCO3·5H2O
Most probably CaCO3·6H2O (= ikaite)
Name:
In allusion to the basic calcite composition and alleged five water molecules of hydration.
Synonym:
A synonym of Ikaite
A substance that occurred in a water pipe and on wood in a brook. The composition was presented as only "close to.." the above formula.


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References for PentahydrocalciteHide

Reference List:
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Hausmann, J.F.L. (1813) Handbuch der Mineralogie 3 volumes, Göttingen. Second edition, vol. 2: 1405 (as Hydroconite).
Salm-Horstmar (1835) Annalen der Physik, Halle, Leipzig: 35: 515.
Scheerer (1846) Annalen der Physik, Halle, Leipzig: 68: 382 (as Fünffach gewässerter kohlensaurer kalk).
Tschirwinsky (1910) Ann. géol. min. Russie: (8): 8: 238.
Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: Halides, Nitrates, Borates, Carbonates, Sulfates, Phosphates, Arsenates, Tungstates, Molybdates, Etc. John Wiley and Sons, Inc., New York, 7th edition, revised and enlarged: 228. [mention of synthetic under “pentahydrocalcite”].

Internet Links for PentahydrocalciteHide

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