Hostname: page-component-78c5997874-t5tsf Total loading time: 0 Render date: 2024-10-31T22:56:38.619Z Has data issue: false hasContentIssue false

Some minerals from the leucite-rich rocks of the West Kimberley area, Western Australia

Published online by Cambridge University Press:  14 March 2018

Rex T. Prider*
Affiliation:
Department of Geology, University of Western Australia

Extract

In the investigation of a suite of leucite-lamproites from the West Kimberley area of Western Australia, carried out in the Department of Mineralogy and Petrology, Cambridge, during the period 1937–38, a number of unusual minerals were noted. Three of these were isolated and analysed and two of them proved to be new species. The present paper deals mainly with the three minerals analysed. They are—

  1. (l) Magnophorite, a new amphibole allied to katophorite.

  2. (2) Wadeite, a new potassium-zirconinm silicate.

  3. (3) Titaniferous phlogopite.

The leueite-bearing rocks occur at a number of isolated volcanic vents, nineteen of which have been examined and mapped by Dr. A. Wade. They have in every instance broken through sedimentary déposits of Permian age. Considerable diversity is to be seen in the rock types developed, but they are all characterized by high potash, magnesia, and titania, with low alumina and soda. Analyses of some types which indicate the general chemical character of these rocks are given in table I.

Type
Research Article
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1939

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Bowley, (H.), 1938. Rep. Dept. Mines Western Australia, for 1937, pp. 93, 88.Google Scholar
Bowley, (H.) 1939. Simpsonite (sp. nov.) from Tabba Tabba, Western Australia. Journ. Roy. Soc. Western Australia, vol. 25 (for 1938–39), pp. 8992.Google Scholar
Cross, (W.), 1897. The igneous rocks of the Leucite Hills and Pilot Butte, Wyoming. Amer. Journ. Sci., ser. 4, vol. 4, pp. 115141.Google Scholar
Fermor, (L. L.), 1909. The manganese-ore deposits of India, Part 1. Mem. Geol. Surv. India, vol. 37.Google Scholar
Freudenberg, (W.), 1908. Der Anophorit, eine neue Hornblende vom Katzenbuckel. Mitt. Badisch. Geol. Landesanstalt, vol. 6, pp. 4583.Google Scholar
Krenner, (J. A.), 1899. Jadeltsteine aus Birma. Zeits. Kryst. Min., vol. 31, p. 503.Google Scholar
Kunitz, (W.), 1930, Die Isomorphieverhältnisse in der Hornblendegruppe. Neues Jahrb. Min., Abt. A, Beil.-Bd. 60, pp. 171250. [M.A. 4–200.]Google Scholar
Lacroix, (A.), 1910. Minéralogie de la France, vol. 4.Google Scholar
Lacroix, (A.), 1922. Minéralogie de Madagascar, vol. 1.Google Scholar
Magnusson, (N. H.), 1930. Långbans malmtrakt. Avh. Sveriges Geol. Undersökn., Set. Ca, no. 23.Google Scholar
Osann, (A.), 1906. Über einige Alkaligesteine aus Spanien. Festschr. Rosenbusch.Google Scholar
Prider, (R. T.), 1939. The leucite-bearing rocks of the West Kimberley area, Western Australia. Abstr. Diss. Univ. Gambridge, for 1937–38.Google Scholar
Rosenbusch, (H.), 1910. Elemente der Gesteinslehre.Google Scholar
Simpson, (E. S.), 1926. Contributions to the mineralogy of Western Australia, Ser. 1. Journ. Roy. Soc. Western Australia, vol. 12, pp. 5859.Google Scholar
Taylor, (L. E. R.), 1939. X-ray studies on simpsonite. Journ. Roy. Soc. Western Australia, vol. 25 (for 1938–39), pp. 9397.Google Scholar
Wade, (A.) and Prider, (R. T.), 1938. The geology and petrology of the Kimberley district, Western Australia. Rep. Brit. Assoc. Adv. Sci., Cambridge, 1938, p. 419.Google Scholar
Wade, (A.) and Prider, (R. T.), 1939. The leucite-bearing rocks of the West Kimberley area, Western Australia. Abstr. Proc. Geol. Soc. London, 1938–39, pp. 103105.Google Scholar
Warren, (B. E.), 1930. The crystal structure and chemical composition of the monoclinic amphiboles. Zeits. Krist., vol. 72, pp. 493517. [M.A. 4–278.]Google Scholar