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Published online by Cambridge University Press: 14 March 2018
While investigating the relies of early habitations at Beraeis, near Jebel Katul, 100 miles N.W. of El Obeid, northern Kordofan, Dr. C. G. Seligman found a number of implements all made of a finegrained, blue-grey stone, quantities of which he found at the base of Jebel Katul. A fragment of this stone was examined by Dr. G. T. Prior in 1912, and found to be rich in riebeckite.
Published by permission of the Trustees of the British Maseum.
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5 See also Grabham, G. W., Nature, 1920, vol. 105, p. 199.CrossRefGoogle Scholar