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Ettringite from Scawt Hill, Co. Antrim

Published online by Cambridge University Press:  14 March 2018

F. A. Bannister
F. A. Bannister*
Affiliation:
British Museum of Natural History
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Extract

Ettringite was the name given by J. Lehmann in 1874 to minute, transparent, acicular crystals lining the cavities of metamorphosed limestone-inclusions in leucite-nepheline-tephrite from the Ettringer-Bellerberg, near the village of Ettringen (between Mayen and the Laacher See), Rhineland. Lehmann detached sufficient needles from the limestone for chemical analysis, and found that they were not gypsum, as formerly supposed, but a hydrated calcium sulphoaluminate.

Type
Research Article
Information
Mineralogical magazine and journal of the Mineralogical Society , Volume 24 , Issue 153 , June 1936 , pp. 324 - 329
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1936

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References

page 324 note 1 Lehmann, J., Neues Jahrb. Min., 1874, p. 273.Google Scholar

page 324 note 2 Tilley, C. E. and Harwood, H. F., Min. Mag., 1931, vol. 22, p. 444.CrossRefGoogle Scholar

page 324 note 3 Tilley, C. E., Min. Mag., 1934, vol. 23, p. 607.CrossRefGoogle Scholar

page 324 note 4 Perfect prismatic cleavage (101̄0).

page 325 note 1 Brauns, R., Die Mineralien der Niederrheinischen Vulkangebiete. Stuttgart, 1922, p. 173.Google Scholar [Min. Abstr., 2-24.]

page 325 note 2 Lerch, W., Ashton, F. W., and Bogue, R. H., Bureau of Standards Journ. Research, Washington, 1929, vol. 2, p. 715.CrossRefGoogle Scholar

page 326 note 1 The recorded forms for ettringite are c (0001), m (101̄0), r (101̄l), p (101̄2), and o (101̄4) [a : c = 1 : 1.908] ; the form r was first noted by R. Brauns (1922).

page 327 note 1 Moses, A. J., Amer. Journ. Sci., 1893, ser. 3, vol. 45, p. 489.Google Scholar