Geochemistry of Spinel Peridotite Inclusions in Basalts from Sardinia

C. Dupuy1, J. Dostal2 and J. L. Bodinier1
1 Centre Géologique et Géophysique, Université des Sciences et Techniques du Languedoc, Place E. Bataillon, 34060 Montpellier, France
2 Department of Geology, Saint Mary's University, Halifax, Nova Scotia, B3H 3C3, Canada

Abstract: The spinel peridotite inclusions in basalts from Sardinia are upper-mantle residues affected by metasomatism which led to an enrichment particularly of U and light REE. The metasomatism took place prior to the recrystallization which produced the primary mineral assemblage of the inclusions. The compositional variations imply that the xenoliths are residual after at least two melting events.

Keywords: spinel • peridotite • basalts • Sardinia • rare earth elements

Mineralogical Magazine; October 1987 v. 51; no. 62; p. 561-568; DOI: 10.1180/minmag.1987.051.362.10
© 1987, The Mineralogical Society
Mineralogical Society (