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The nature of cryphiolite

Published online by Cambridge University Press:  14 March 2018

G. F. Claringbull  and
M. H. Hey
G. F. Claringbull
Affiliation:
Dept. of Mineralogy, British Museum (Natural History), London, S.W. 7
M. H. Hey
Affiliation:
Dept. of Mineralogy, British Museum (Natural History), London, S.W. 7
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Type
Short Communications
Information
Mineralogical magazine and journal of the Mineralogical Society , Volume 31 , Issue 235 , December 1956 , pp. 346 - 347
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1956

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References

page 346 note 1 Atti, R. Accad. Napoli, 1886, ser. 2, vol. 1, no. 5 Google Scholar. Incorrectly cited by F. Zambonini, C. Hintze, and H. Strunz as A. and E. Seacehi; the paper is by A. Scaeehi, but E. Scaeehi drew the figures.

page 346 note 2 Syst. Min., 6th edn, 1892, p. 77. Dana uses the conventional orientation with b as symmetry axis ; further, Scaeehi's A = Dana's c{0Ol}, B = a{100}, m = μ{110}, n = n{1¯11}, and e = e{2¯01}.

page 346 note 3 Handb. Min., Bd. I, Abt. 4, p. 695. Hintze uses the same orientation as Dana but retains Scaeehi's significant letters except for n; Scacchi's n = Hintze's u.

page 346 note 4 Zentr. Min., 1938, set. A, p. 59.

page 346 note 5 Min. Tabellen, 1941, p. 234.

page 346 note 6 Min, Vesuv., 1910, p. 313.

page 347 note 1 The P2O5 percentage is obviously too high; the phosphate precipitates were probably contaminated with silica.

page 347 note 2 Min. Mag., 1955, vol. 30, p. 681.Google Scholar

page 347 note 3 Accepting Zambonini's orientation, Scacchi's and our measurements compare with the calculated angles for wagnerite as follows: [AB]:[Bm] 12° A.S., 122° M.H.H., 123° 35' calc.; [AB]:[Am] 117° A.S., 117° M.H.H., 117° 31' calc. [Am]:[Bm] 94° 30' A.S., 94° 18' calc.