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A comparison between the parageneses of Fennoscandian limestone contact minerals and those of the Alnö alkaline rocks, associated with carbonates

Published online by Cambridge University Press:  14 March 2018

Harry von Eckermann
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Extract

Pargas in Finland and MansjSand and Tennberg in Sweden are the only three Fennoscandian contact metamorphic limestone occurrences of which systematic accounts have been published; in the first case by A. Laitakari (1) and in the two latter ones by the present author (2, 3). A more complete analytical programme would have been desirable, and unfortunately many of the analyses are incomplete, especially as regards the determination of the valency of the iron. Nevertheless, the available data, and a few I have been able to add later, may suffice to give us a general idea of the paragenetical and chemical differences between these Archaean mineral parageneses and those of much younger age which occur in connexion with the limestone masses associated with the alkaline occurrence of Alnö in Sweden.

Type
Research Article
Information
Mineralogical magazine and journal of the Mineralogical Society , Volume 29 , Issue 211 , December 1950 , pp. 304 - 312
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1950

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References

1. Laitakari, (A.). über die Petrographie und Miaeralogie der Kalksteinlagerstätten yon Parainen (Pargas). Bull. Geol. Undersök. Finland, 1921. no. 54, 114 pp. [M.A. 1-211.]Google Scholar
2. Eckermann, (H. von). The rocks and contact minerals of the Mansjö Mountain. Geol. För. Förh. Stockholm, 1922. vol. 44, pp. 203-416. [M.A. 1-396.]CrossRefGoogle Scholar
3. Eckermann, (H. von). The rocks and contact minerals of Tennberg. Geol. För. Förh. Stockholm, 1923. vol. 45, pp. 465-537. [M.A. 2-402.]CrossRefGoogle Scholar
4. Eckermann, (H. von). The alkaline district of Alnö Island. Sveriges Geol. Undersök., 1948. Ser. Ca, no. 36, 176 pp. [M.A. 11-27.]Google Scholar
5. Backlund, (H.). Der ' Magmaaufstieg' in Faltengebirgen. Bull. Comm. Géol. Finlande, 1936. no. 115 (Compt. Rend., Soc. Géol. Finlande, vol. 19), p. 293.Google Scholar