Welcome to the new version of CaltechAUTHORS. Login is currently restricted to library staff. If you notice any issues, please email coda@library.caltech.edu
Published October 27, 1988 | public
Journal Article

Mantle-derived fluids in diamond micro-inclusions

Abstract

Micro-inclusions in diamonds from Zaire and Botswana differ in composition from the more common large inclusions of the peridotitic or eclogitic assemblages. These sub-micrometre inclusions resemble potassic magmas in their composition, but are enriched in H_2O, CO^(2−)_3 and K_2O and depleted in MgO. This composition represents a volatile-rich fluid or melt from the upper mantle, which was trapped in the diamonds as they grew.

Additional Information

© 1988 Nature Publishing Group. Received 20 July accepted 19 September 1988. We thank J. T. Armstrong for his essential help in obtaining the EPMA and SEM results, H. Palme and B. Spettel for the INAA analyses, C. T. Pillinger for sharing his samples, data and enthusiasm, Ph. Chevalier of Sibeka, J. Robey of De Beers, J. W. Harris, J. Citron and J. Borden for diamonds, and D. Bell, J. Blum, G. Mattioli, E. Stolper, P. Wyllie, S. Haggerty and E. Roedder for very useful comments and reviews. A preliminary report of this work was presented earlier. Funding was provided by NSF and NASA. O.N., I.D.H. and G.J.W. are at the Lunatic Asylum of the Charles Arms Laboratory (No.4646/625).

Additional details

Created:
August 22, 2023
Modified:
October 23, 2023