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Silica-glass from the Libyan Desert1

Published online by Cambridge University Press:  14 March 2018

P. A. Clayton  and
L. J. Spencer
P. A. Clayton
Affiliation:
Desert Surveys, Survey of Egypt
L. J. Spencer
Affiliation:
British Museum
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Extract

An occurrence of silica-glass in lumps up to 10 lb. in weight, smaller fragments being scattered over an area at least 80 by 25 kilometres, has been discovered in the course of the work of the Egyptian Desert Surveys. A Survey expedition under Mr. P. A. Clayton was sent out in December 1932 to work in the unexplored area of the Sand Sea and Gill Kebir, west of Major R. A. Bagnold's 1930 route, and found the glass on December 29, 1932.

Type
Research Article
Information
Mineralogical magazine and journal of the Mineralogical Society , Volume 23 , Issue 144 , March 1934 , pp. 501 - 508
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1934

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Footnotes

page 501 note 1

Portions of this paper were published in the Geographical Journal, October, 1933, vol. 82, pp. 375-377.

References

page 505 note 1 L. J. Spencer, Gemmologist, London, 1933, vol. 3, p. 111. [Min. Abstr., 5-398.]

page 505 note 2 Values (for Li and T1 by interpolation) given by R. B. Sosman, International Critical Tables, 1929, vol. 6, p. 341.

page 508 note 1 Nature, London, 1933, vo]. 131, pp. 117, 876; vol. 132, pp. 571, 678. [Min. Abstr., 5-303, 304, 407.]

page 508 note 2 Geogr. Journ., 1933, vol. 81, p. 257, and plate facing p. 252.

page 508 note 3 Geogr. Journ., 1933, vol. 82, pp. 106, 215.

page 508 note 4 K. S. Sandford, Volcanic craters in the Libyan Desert. Nature, London, 1933, vol. 131, pp. 46-47.