The LaPaz Icefield 04840 meteorite : Mineralogy, metamorphism, and origin of an amphibole-and biotite-bearing R chondrite

@inproceedings{Mccanta2008TheLI,
  title={The LaPaz Icefield 04840 meteorite : Mineralogy, metamorphism, and origin of an amphibole-and biotite-bearing R chondrite},
  author={Molly C. Mccanta and Allan H Treiman and Melinda Darby Dyar and Conel M. Od. Alexander and Douglas Rumble and Eric J. Essene},
  year={2008}
}
The R chondrite meteorite LaPaz Icefield (LAP) 04840 is unique among metamorphosed, non-carbonaceous chondrites in containing abundant OH-bearing silicate minerals: ~13% ferri-magnesiohornblende and ~0.4% phlogopite by volume. Other minerals include olivine (Fo(62)), orthopyroxene (En(69)Fs(30)Wo(1)), albite (An(8)Ab(90)Or(2)), magnetite, pyrrhotite, pentlandite, and apatite. Ferromagnesian minerals are rich in Fe3+ as determined by Mossbauer spectrometry and electron microprobe chemical… CONTINUE READING
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