Letter | Published:

Transition of Calcium Sulphate Hemihydrate to Insoluble Anhydrite

Abstract

RECENTLY Powell1 directed attention to the fact that for calcium sulphate hemihydrate the rate of transition of soluble anhydrite to insoluble anhydrite was greater in the α- than in the β-form. Similar phenomena were observed in our experiments2.

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References

  1. 1

    Powell, D. A., Nature, 182, 792 (1958).

  2. 2

    Mitsuki, C., and Kita, M., Reports Gov. Ind. Res. Inst., Nagoya, 9, 413 (1955).

  3. 3

    Buerger, M. J., “Phase Transformation in Solids”, 206 (Wiley, New York, 1951).

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