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On Carnotite and an associated mineral complex from South Australia1

Published online by Cambridge University Press:  14 March 2018

T. Crook  and
G. S. Blake
T. Crook
Affiliation:
Scientific and Technical Department, Imperial Institute
G. S. Blake
Affiliation:
Scientific and Technical Department, Imperial Institute
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Extract

This paper gives the results of an investigation at the Imperial Institute of a carnotite-bearing specimen received from South Australia.

The material represented by the specimen is described by Mr. H. Y. L. Brown, Government Geologist of South Australia, as occurring about 2 miles SSW. of Teesdale's dam and about 20 miles ESE. of Olary railway station. He remarks : ‘The ore occurs as yellow and greenish-yellow incrustations and powder on the faces, joints, and cavities of a lode formation, which consists of magnetic titaniferous iron, magnetite, &c., and quartz in association with black mica (biotite) . . . . . . The outcrops traverse metamorphic gneissic micaceous granite and granite schist, into which dykes of granite and diorite have been intruded.’

Type
Research Article
Information
Mineralogical magazine and journal of the Mineralogical Society , Volume 15 , Issue 71 , March 1910 , pp. 271 - 284
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1910

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Footnotes

1

Communicated by permission of the Director of the Imperial Institute.

References

Page 271 note 2 Brown, H. Y. L., ‘Record of the Mines of South Australia.’ 4th Edition, Adelaide, 1908, p. 361.Google Scholar

Page 271 note 3 The exact locality is referred to by Mr. Mawsov (see below) as Radium Hill.

Page 272 note 1 Mawson, D., ‘On certain new mineral species associated with carnotite in the radio-active ore body near Olary.’ Trans. and Proc. Royal Society of South Australia, 1906, vol. xxx, p. 188.Google Scholar

Page 272 note 2 E. H. Rennie and W. T. Cooke, ‘Preliminary analytical notes on the minerals described in the preceding paper.’ Ibid., p. 193.

Page 274 note 1 Hillebrand, W. F. and Ransome, F. L., ‘On carnotite and associated vanadiferous minerals in western Colorado.’ Amer. Journ. Sci., 1900, ser. 4, vol. x, pp. 120–144 CrossRefGoogle Scholar ; and Bull. United States Geol. Survey, 1905, No. 262, pp. 9-31.

Page 276 note 1 Friedel, C. and Cumenge, E., Compt. Rend. Aead. Sci. Paris, 1899, vol. cxxviii, p. 582 Google Scholar ; and Bull. Soc. franç Min., 1899. vol. xxii, pp. 26 and 26 his.

Page 276 note 2 W.P. Hillebrand, loc. cit.

Page 276 note 3 The birefringence effects at the margin of the splintered plates indicates abrupt stepping due to basal cleavage.

Page 276 note 4 Church, A. H., ‘On the composition of autunite.’ Journ. Chem. Soc. London, 1875, vol. xxviii, pp. 109–112.Google Scholar.

Page 277 note 1 loc. cit., pp. 18 and 21.

Page 277 note 2 Gale, H. S., ‘Carnotite in Rio Blanco County, Colorado.’ Bull. United States Geol. Survey, 1907, No. 815, pp. 111, 112.Google Scholar

Page 280 note 1 The occurrence of the carnotite as platy growths in these cavities accounts for the good crystals obtained by partial crushing and magnetic separation.

Page 280 note 2 In making the above analysis, the estimation of alkalis was inadvertently omitted ; an examination of a separate fragment showed that alkalis were present, perhaps to the extent of a few tenths per cent.

Page 281 note 1 If this is named after Sefström, the discoverer of vanadium, as is presumably the case, the supposed new mineral should have been called sefströmite.