Reaction rims of orthopyroxene and plagioclase around chrome spinels in olivine from Skye and Rhum (NW Scotland)

Saved in:
Authors:Bevan, J. C.
Author Affiliations:Primary:
Brit. Mus. (Nat. Hist.), London SW7 5BD, United Kingdom
Volume Title:Contributions to Mineralogy and Petrology
Source:Contributions to Mineralogy and Petrology, 79(2), p.124-129. Publisher: Springer International, Heidelberg-New York, International. ISSN: 0010-7999
Publication Date:1982
Note:In English. 12 refs.; illus. incl. 16 anal., 1 table
Summary:The effects of reaction between chrome spinel and its supernatant magma due to changes in magmatic composition or T can be observed in the rocks of Skye and Rhum. Evidence of solid-solid reaction between chrome spinels and enclosing olivine is also present, in the form of relic diffusion profiles in some of the olivines, and an orthopyroxene reaction product rimming the spinel. The Rhum specimens also contain rims of plagioclase resulting from solid-liquid reaction around chrome spinels within the margins of olivine. Detailed microprobe traverses and analyses of reaction products were made in an attempt to determine the equations for these reactions. Microprobe analyses (16) of representative sets of reactants and rims are presented. [P.Br.]
Subjects:Chain silicates; Chrome spinel; Electron probe data; Feldspar group; Framework silicates; Igneous rocks; Nesosilicates; Olivine; Olivine group; Orthopyroxene; Orthosilicates; Oxides; Peridotites; Petrology; Plagioclase; Plutonic rocks; Pyroxene group; Reaction rims; Silicates; Spinel; Ultramafics; Europe; Great Britain; Hebrides; Highland region Scotland; Inner Hebrides; Inverness-shire Scotland; Isle of Skye; Rhum; Scotland; United Kingdom; Western Europe
Coordinates:N565500 N574500 W0054000 W0065000
Abstract Numbers:82M/4531
Record ID:1983021782
Copyright Information:GeoRef, Copyright 2019 American Geosciences Institute. Reference includes data from Mineralogical Abstracts, United Kingdom, Twickenham, United Kingdom, Reference includes data from PASCAL, Institute de l'Information Scientifique et Technique
Tags: Add Tag
No Tags, Be the first to tag this record!