Plagioclase-rich microgranular inclusions from the late-Caledonian Galway Granite, Connemara, Ireland

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doi: 10.1180/002646100549030
Authors:Graham, N. T.; Feely, M.; Callaghan, B.
Author Affiliations:Primary:
University of Oxford, Department of Earth Sciences, United Kingdom
National University of Ireland, Ireland
Volume Title:Mineralogical Magazine
Source:Mineralogical Magazine, 64(1), p.113-120. Publisher: Mineralogical Society, London, United Kingdom. ISSN: 0026-461X
Publication Date:2000
Note:In English. 34 refs.; illus., incl. 2 tables, geol. sketch maps
Summary:Leucocratic plagioclase-rich microgranular inclusions occur in numerous localities in a 4 km wide corridor in two granite facies of the Galway granite. The plagioclase (An22-32) is similar in composition to that of the host granites, and amounts to 61-78 % of the mode of these inclusions (other minerals being K-feldspar, quartz, biotite and magnetite). These inclusions differ from seven other types of enclave in the granites; their origin is uncertain, but they may have formed from the host granite magma either as segregation of melt or by the union (synneusis) of crystals. [R.A.H.]
Subsections:Igneous petrology
Subjects:Caledonian Orogeny; Feldspar group; Framework silicates; Granites; Igneous rocks; Inclusions; Mineral inclusions; Paleozoic; Petrography; Plagioclase; Plutonic rocks; Silicates; Connemara; Europe; Galway Granite; Galway Ireland; Ireland; Western Europe
Coordinates:N531500 N532000 W0093000 W0100000
Abstract Numbers:00M/2093
Record ID:2000041783
Copyright Information:GeoRef, Copyright 2019 American Geosciences Institute. Reference includes data from Mineralogical Abstracts, United Kingdom, Twickenham, United Kingdom
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