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Rare zinc-copper minerals from the Rhodesian Broken Hill mine, Northern Rhodesia

Published online by Cambridge University Press:  14 March 2018

F. P. Mennell
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Extract

Among the lead and zinc minerals which occur in the Rhodesian Broken Hill mine workings at what used to be No. 1 Kopje (now represented by a hole in the ground) copper compounds are occasionally to be seen. Their quantity is always very small, but they are readily noticeable on accouut of their colour. They include malachite, chessylite, cuprite, copper-glance, and undetermined phosphates, and, what is more, interesting, double salts of copper and zinc.

Type
Research Article
Information
Mineralogical magazine and journal of the Mineralogical Society , Volume 19 , Issue 90 , September 1920 , pp. 69 - 72
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1920

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References

page 69 note 1 The average amount of copper in the ore is estimated at about 0.055 per cent.

page 69 note 2 An undetermined mineral, probably a copper phosphate, is mentioned by Spencer, L J. in his description of the minerals from this mine. Mineralog. Mag., 1908, vol. 15, p. 2 CrossRefGoogle Scholar.

page 70 note 1 M. Henglein and W. Meigen, Centralblatt Min., 1914, p. 353.

page 70 note 2 A. Schrauf, Anz. Akad. wien, 1874, p. 135 ; Zeits. Kryst. Min., 1879, vol. 4, p. 81 ; see also Dana's Mineralogy, 6th ed., 1892, p. 841.

page 71 note 1 Veszelyito seems to have the composition 7(Cu,Zn)O. (P,As)2O5,.9H2O. Water found 17·05 (Sehrauf), calvulatod 18·1 per cent.

page 71 note 2 After removal of the copper as sulphide there is a copious zinc precipitate with potassium ferrocyanide.