A dense polymorph of Ca3(PO4)2: a high pressure phase of apatite decomposition and its geochemical significance

Details A dense polymorph of Ca3(PO4)2: a high pressure phase of apatite decomposition and its geochemical significance A dense polymorph of Ca3(PO4)2: a high pressure phase of apatite decomposition and its geochemical significance

Dec 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986pepi...44..293m&link_type=abstract

Physics of the Earth and Planetary Interiors, Volume 44, Issue 4, p. 293-303.

Physics

17

Scientific paper

Compression of hydroxylapatite and fluorapatite to 15 GPa at temperatures up to 2300°C has revealed that apatites decompose to a phase assemblage with Ca3(PO4)2 above 12 GPa. The Ca3(PO4)2 is the fourth known polymorph that is stable only at high pressure, and it is an important crystalline host for the large lithophile incompatible elements in the deep upper mantle of the Earth.

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