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On the Occurrence of Iron-rich Cordierite in Aberdeenshire

Published online by Cambridge University Press:  01 May 2009

H. H. Read
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Extract

In my account of the petrology of the Arnage district of Aberdeenshire, there appeared a description, figure, and analysis of a cordierite-spinel-hornfels from Gallowhill Brae, Arnage. This rock is composed almost entirely of cordierite, with only an accessory amount of spinel, biotite, and plagioclase. On the assumption that the analysis represented the composition of the sliced material, it was pointed out that in the cordierite of this rock, iron-oxides must replace much of the alumina and magnesia of normal cordierite.

Type
Original Articles
Information
Geological Magazine , Volume 66 , Issue 12 , December 1929 , pp. 547 - 552
Copyright
Copyright © Cambridge University Press 1929

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References

page 547 note 1 Read, H. H., “The Petrology of the Arnage District (Aberdeenshire)”: Q.J.G.S., lxxix, 1923, pp. 476–8, fig. 6b.Google Scholar The analysis is also given in “Summary of Progress for 1923”: Mem. Geol. Surv., 1924, p. 134.Google Scholar

page 549 note 1 Tilley, C. E., “Contact-Metamorphism in the Comrie Area of the Perth-shire High1and”: Q.J.G.S., lxxx, 1924, pp. 52–3.Google Scholar

page 549 note 2 Bücking, H., “Cordierite von Nord-Celebes und aus den sogen. verglasten Sandsteinen Mitteldeutschlands”: Ber. d. Senckenbergischen naturf. Ges. in Frankfurt a. M., 1900.Google Scholar Abstract by Mügge, O. in Neues Jahrb., 1901, ii, pp. 72–3.Google Scholar

page 549 note 3 Fermor, L. L., “Preliminary Note on the Burning of Coal Seams at the Outcrop”: Trans. Min. Geol. Inst. India, xii, pp. 50–9.Google Scholar

page 549 note 4 Cf. L. L. Fermor in the Discussion to C. E. Tilley, loc. cit., pp. 70–1.

page 551 note 1 Mull Memoir, 1924, p. 34.Google Scholar

page 551 note 2 Nyt Mag. f. Naturv., xxx, 1886, p. 318.Google Scholar

page 552 note 1 Eskola, P., “Om Sambandet mellan Kemisk och Mineralogisk Samman-sattning hos Orijärvitraktens Metamorpha Bergarter”: Bull. Com. Géol. Finlande, No. 44, p. 122.Google Scholar

page 552 note 2 Loc. cit., p. 123.

page 552 note 3 Backlund, H., “Petrogenetische Studien an Taimyrgesteinen”: G.F.F., xl, 1918, pp. 126–7.Google Scholar