Lamprophyre Dykes from Argyll

M. J. Gallagher
Atomic Energy Division, Geological Survey of Great Britain, Young Street, London W. 8

Summary: In the Carboniferous-Permian dyke-suite north of Loch Sunart, Argyll, a complete gradation is displayed from olivine-dolerite to camptonite. The dolerites are more numerous than the camptonites, and dykes of monchiquite are rare. A small number of minettes and allied lamprophyre types of Devonian age are also present. New analyses of biotite and diopside from a minette and of augite and hornblende from a camptonite are presented, with optical data, and the classification of the dykes briefly discussed.

Mineralogical Magazine; March 1963 v. 33; no. 260; p. 415-430; DOI: 10.1180/minmag.1963.033.260.07
© 1963, The Mineralogical Society
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