1. Two diamond-bearing peridotite xenoliths from the finsch kimberlite, South Africa

   • S. R. Shee
   • J. J. Gurney
   • D. N. Robinson

   OriginalPaper Pages: 79 - 87

2. Genetic relations among basic lavas and ultramafic nodules: Evidence from oxygen isotope compositions

   • T. Kurtis Kyser
   • James R. O'Neil
   • Ian S. E. Carmichael

   OriginalPaper Pages: 88 - 102

3. Aluminum coordination in metaaluminous and peralkaline silicate melts

   • Paul C. Hess
   • Marcus I. Wood

   OriginalPaper Pages: 103 - 112

4. Crystal-field spectra for blue and green diopsides synthesized in the join CaMgSi₂O₆-CaCrAlSiO₆

   • Ko Ikeda
   • Kenzo Yagi

   OriginalPaper Pages: 113 - 118

5. A Comparison of amphiboles from medium- and low-pressure metabasites

   • A. Hynes

   OriginalPaper Pages: 119 - 125

6. Geochemistry and Rb-sr geochronology of associated proterozoic peralkaline and subalkaline anorogenic granites from Labrador

   • Kenneth D. Collerson

   OriginalPaper Pages: 126 - 147

7. The origin of reversed geochemical zoning in the northern New Hebrides volcanic arc

   • M. Barsdell
   • I. E. M. Smith
   • K. B. Spörli

   OriginalPaper Pages: 148 - 155