Late magmatic phenomena in the Cornish Batholith; useful field guides for tin mineralisation

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Authors:Badham, J. P. N.
Volume Title:Research into the geology and geomorphology of S.W. England
Volume Authors:Edwards, R. A., editor
Source:Proceedings of the Ussher Society, Vol.5 ( Part 1), p.44-53; Conference of the Ussher Society ; Research into the geology and geomorphology of S.W. England, Plymouth, United Kingdom, Jan. 1980, edited by R. A. Edwards. Publisher: Ussher Society, Bristol, United Kingdom. ISSN: 0566-3954
Publication Date:1980
Note:In English. 32 refs.; illus. incl. 4 anals., 1 table, geol. sketch map
Summary:Late and post-magmatic phenomena associated with the Cornish granites are reviewed. They include the formation of pegmatites, dykes, veins, and breccia pipes and metasomatism. The nature of the late-magmatic fluids is discussed. It is pointed out that in Cornwall residual magmatic rocks (pegmatites) are poor in cassiterite. As a corollary the tin must have entered early-crystallizing rock-forming minerals such as biotite, thus rendering it more susceptible to concentration by later hydrothermal fluids. [A.H.]
Subjects:Aplite; Arsenic; Batholiths; Chemical composition; Composition; Copper; Economic geology; Gallium; Geochemistry; Granites; Hydrothermal alteration; Igneous rocks; Intrusions; Lead; Leucogranite; Metal ores; Metals; Metasomatism; Mineral deposits, genesis; Mineralization; Nickel; Ore guides; Pegmatite; Plutonic rocks; Tin ores; Veins; Zinc; Cornwall England; England; Europe; Great Britain; United Kingdom; Western Europe; Cligga Head; Cornish Batholith; Hydrothermal processes; Land's End Granite; Saint Austell Granite; Tregonning-Godolphin Granite
Coordinates:N500000 N505000 W0041500 W0063000
Abstract Numbers:82M/1416
Record ID:1981062083
Copyright Information:GeoRef, Copyright 2019 American Geosciences Institute. Reference includes data from Mineralogical Abstracts, United Kingdom, Twickenham, United Kingdom
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