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Powellite from Traprain Law, Haddingtonshire, Scotland

Published online by Cambridge University Press:  14 March 2018

M. H. Battey  and
A. A. Moss
M. H. Battey
Affiliation:
Geology Department, King's College, Newcastle upon Tyne
A. A. Moss
Affiliation:
Department of Mineralogy, British Museum (Natural History).
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Summary

Powellite, appearing to be of primary late-magmatic origin, has been found associated with analcime, apophyllite, and calcite in a geode in phonolite. Data are: D 4·40, ε 1·984, ω 1·971, a 5·20 Å, c 11·43 Å, CaO 27·8, MoO3 61·8 (av.), WO3 11·4 (av.).

Type
Research Article
Information
Mineralogical magazine and journal of the Mineralogical Society , Volume 33 , Issue 257 , June 1962 , pp. 158 - 161
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1962

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References

1 A. G. MacGregor and F. R. Ennos, Geol. Mag., 1922, vol. 59, p. 514.

1 C. Palaehe, Amer. Journ. Sei., 1899, ser. 4, voL 7, p. 367.

1 G. H. Bush and D. G. Higgs, Analyst, 1955, vol. 80, p. 536.

2 C. Palache, I-I. Berman, and C. Frondel, Dana's System of Mineralogy, 7th edn, vol. 2, New York, 1951, p. 1081.

1 Loc. cit.

2 P. K. Kuroda and E. B. Sandell, Geochimica Acta, 1954, vol. 6, p. 35.