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On Gearksutite at Gingin, Western Australia1

Published online by Cambridge University Press:  14 March 2018

Edward S. Simpson
Edward S. Simpson*
Affiliation:
Geological Survey of Western, Australia
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Summary

A description is given of the occurrence of gearksutite under novel conditions, viz. in Cretaceous greensand, at Gingin in Western Australia. Some additions are made to the previously known physical and chemical properties of the mineral and a new suggestion is put forward as to its constitution. Its genesis is discussed and theories put forward to account for its origin under the previously known and newly discovered conditions.

Type
Research Article
Information
Mineralogical magazine and journal of the Mineralogical Society , Volume 19 , Issue 89 , May 1920 , pp. 23 - 39
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1920

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Footnotes

1

Published by permission of A. Gibb Maitland, Government Geologist.

References

page 29 note 1 By chromic acid oxidation.

page 30 note 1 Simpson, E. S., Unusual types of petrifaction from Dandarragan. Journ. Nat. Hist. Soc. W. Austr. 1912, vol. 4, p. 33.Google Scholar

page 33 note 1 Present as glauconite.

page 33 note 2 W. F. Hillebrand, Bull. U.S. Geol. Survey, 1910, no. 422, p. 188.

page 35 note 1 Includes small amount of HF, in the Colorado mineral about 1·5 per cent at conclusion of experiment.