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Allopalladium from British Guiana

Published online by Cambridge University Press:  14 March 2018

L. J. Spencer
L. J. Spencer*
Affiliation:
Mineral Department of the British Museum (Natural History)
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Extract

At the November (1923) meeting of the Society I gave an account of a new find of euclase of peculiar habit and of native platinum from the gold and diamond washings in British Guiana. The occurrence of platinum being a new record for that country, the announcement was naturally received there with some interest—but also with some scepticism. Mr. J. C. Menzies, by whom the platinum was found, has been accused of ‘salting’ the locality, or, alternatively, doubt has been cast on the correctness of my determination. The euclase aggregates, thought by Mr. Menzies to be fossils, could certainly not have been used by him for ‘salting’; and as the platinum (together with some small, silvery scales of mica) came with these, I have no reason to doubt his bona tides. I am also quite satisfied with the correctness of my determination of the material as platinum, as set out in detail on p. 191 of this volume.

Type
Research Article
Information
Mineralogical magazine and journal of the Mineralogical Society , Volume 20 , Issue 105 , June 1924 , pp. 217 - 219
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1924

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References

Page 218 note 1 Duparc, L. and Tikonowitch, M. N., Le platine et les gîtes platinifères de l'Oural et du monde. Genève, 1920, p. 239 Google Scholar. [Min. Abstr., vol. 1, p. 179.]

Page 218 note 2 See references in C. Hintze's Handbuch d. Mineralogie, 1898, vol. 1 (part 1), pp. 131-133; also later, Hussak, E., Über das Vorkommen von Palladium und Platin in Brasilien. Sitzungsber. Akad. Wiss. Wien, Math.-naturwiss. KI., 1904, vol. 113, Abt. I, pp. 379–466 Google Scholar ; Zeits. prakt. Geol., 1906, vol. 14, pp. 284–293. Howe, J. L. and Holtz, H. C., Bibliography of the metals of the platinum group. Bull. U.S. Geol. Survey, 1919, no. 694. [Min. Abstr., vol. 1, p. 83.]Google Scholar

Page 219 note 1 Rose, G., Ueber die Dimorphie des Palladiums. Ann. Phys. Chem. (Poggendorff), 1842. vol. 55, pp. 329–331 CrossRefGoogle Scholar.

Page 219 note 2 Groth, P., Chemische Krystallographie, 1906, vol. 1, p. 38 Google Scholar

Page 219 note 3 Vernadsky, V. I., Opuit opisatelnoi mineralogii, St. Peterburg, 1914, vol. 1, pp. 157, 249-251.Google Scholar

Page 219 note 4 A. W. Hall, 1920 and 1921 (Min. Abstr., vol. 1, p. 185) ; L. W. McKeehan, 1922.