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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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