Dislocations and voids in pyroxene from a low-temperature eclogite: Mechanism of eclogite formation |
| |
| Authors: | P E Champness W S Fyfe G W Lorimer |
| |
| Institution: | (1) Department of Chemistry and Institute of Geophysics and Planetary Physics, University of California, 90024 Los Angeles, CA |
| |
| Abstract: | New occurrences of the phosphates sarcopside/graftonite (Fe, Mn)3(PO4)2, farringtonite (Mg, Fe)3(PO4)2, and brianite Na2CaMg(PO4)2 in iron meteorites are reported. The sarcopside in Duel Hill (1854) (IVA-Anom) contains less than 0.1 mole % Mn3(PO4)2 and more nearly approaches the Fe-rich end member than does any previously reported natural occurrence. This identification of farringtonite in Barranca Bianca (IIE) is the first report of this mineral in a meteorite group other than the pallasites. |
| |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ |
|
