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Paragenesis of hydrothermal mineralization in amphibolites and granulites around Porthkerris Point, the Lizard, Cornwall

Published online by Cambridge University Press:  05 July 2018

A. F. Seager
A. F. Seager*
Affiliation:
Department of Geology, Birkbeck College, University of London
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Extract

A study of the post-metamorphic hydrothermal mineralization in the gabbros of the Lizard has already been published (Seager, 1971). The present paper extends the investigation of mineralization in the peninsula to an adjacent area, on the NE. coast around Porthkerris Point. Table 1 gives the more important events of the paragenesis. Calcite and adularia are the only common minerals; all others are scarce or rare.

The calcite that precedes and succeeds adularia is called early calcite and late calcite, respectively. Both early and late calcite occur in several generations differing in habit, fluorescence, and phosphorescence.

Type
Synopses
Information
Mineralogical Magazine , Volume 42 , Issue 324 , December 1978 , pp. 509 - 511
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1978

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References

Darnley, (A.G.), English, (T. H.), Sprake, (O.), Preece, (E. R.) and Avery, (D.), 1965. Mineral. Mag. 34, 159-76. [M.A. 17-121].Google Scholar
Flett, (j.S.), 1946. Geology of the Lizard and Meneage, 2rid edn. Mem. Geol. Surv. G.B.Google Scholar
Green, (D. H.), 1964(a). J. Geol. 72, 543-63 [M.A. 17-311].CrossRefGoogle Scholar
Green, (D. H.), 1964(b). In Hosking, (K. F. G.) and Shrimpton, (G. J.) (eds.), Present views of some aspects of the geology of Cornwall and Devon. R. geol. Soc. Corall, 87-114 [M.A. 17-649].Google Scholar
Grigor'ev, (D. P.), 1965. Ontogeny of minerals. Transl. from the Russian (1961), translation edited by Y. Brenner. Jerusalem. (Israel Progr Sci. Transl.), 1965 [M.A. 17-452].Google Scholar
Halliday, (A. N.) and Mitchell, (J. G.), 1976(a). Earth Planet. Sci. Lett. 29, 227-37 [M.A. 77-1290].CrossRefGoogle Scholar
Halliday, (A. N.) and Mitchell, (J. G.), 1976(b). Proc. ussher Soc. 3, 426.Google Scholar
Holyer, (V. A. D.), 1972. The Lizard, 4, no. 4, 11–20.Google Scholar
Hosking, (K. F. G.), 1964. In Hosking, (K. F. G.) and shrimpton, (G. J.) (eds.), Present views of some aspects of the geology of cornwall and Devon. R. geol. Soc. cornwall, 201-45 [M.A. 17-650].Google Scholar
Kostov, (I.), First English edition 1968. [Author's translation edited by Embrey, P. G. and Phemister, J.]- Mineralogy. Oliver and Boyd, Edinburgh and London [M.A. 19-261].Google Scholar
Mitchell, (J. G) and Halliday, (A. N.), 1976. Trans. Inst. Min. Metall. (Sect. B: Appl. Earth Sci.), 85, 159-61.[M.A. 76-3318].Google Scholar
Seager, (A. F.), 1967-8 [1971]. Trans. R. geol. Soc. Cornwall, 20, pt. 2, 97-113 [M.A. 72-3370].Google Scholar
Seager, (A. F.), 1978. Mineral. Meg. 42, 245–9.CrossRefGoogle Scholar
Seager, (A. F.), Fitch, (F. J.) and Miller, (J. A.), 1975. Geog. Mag. 112, 519-22 [M.A. 76-1239].CrossRefGoogle Scholar
Seager, (A. F.), Fitch, (F. J.) and Miller, (J. A.), 1978. Geog. Mag. 115, 211-4.CrossRefGoogle Scholar