- GeoRef, Copyright 2004, American Geological Institute. Reference includes data from Bibliography and Index of Geology Exclusive of North America, Geological Society of America, Boulder, CO, United States
Eight pyroxenes from the ultramafic peridotite of the Dawros promontory on the western coast of Ireland have been analyzed. The chemical data are given here, together with a rock analysis. Three are primary pyroxenes from the layered peridotite resulting from fractional crystallization, four are recrystallized pyroxenes from deformed peridotite, and one is possibly a metamorphic pyroxene. It is associated with green spinel and ore, and shows a high Al 2 O 3 content. The pyroxenes are compared with those from other areas, and the indications of recrystallization and metamorphism which make comparison difficult are discussed.