Apatite, phosphorus and titanium in eclogitic garnet from the upper mantle

S. E. Haggerty, A. T. Fung, Donald Burt

Research output: Contribution to journalArticlepeer-review

54 Scopus citations


The existence of apatite exsolution lamellae in garnet supports earlier suggestions that garnet is a major repository for P in the mantle, and that P is strongly coupled to Na+Ti. The bulk P content (∼250 ppm) of mantle eclogites is unexpectedly similar to estimates for the P content (130–220 ppm) of the upper mantle; both rocks are depleted relative to chondrites and to ocean floor basalts. Eclogites have either equilibrated with the mantle at large, or have undergone secondary melting, and based on P contents are unlikely to have had subducted protoliths.

Original languageEnglish (US)
Pages (from-to)1699-1702
Number of pages4
JournalGeophysical Research Letters
Issue number16
StatePublished - Aug 1 1994

ASJC Scopus subject areas

  • Geophysics
  • General Earth and Planetary Sciences


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