Abstract
WE have determined the crystal structure of thaumasite, a hydrated calcium silicate sulphate carbonate mineral. The results are interesting because they show the presence of [Si(OH)6]2− ions. Six-coordination of silicon by hydroxyl has not previously been proved to occur, though its existence has been postulated for silicate ions in aqueous solution1.
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EDGE, R., TAYLOR, H. Crystal Structure of Thaumasite, a Mineral containing [Si(OH)6]2− Groups. Nature 224, 363–364 (1969). https://doi.org/10.1038/224363a0
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DOI: https://doi.org/10.1038/224363a0
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