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Magnetic monitoring of pyrrhotite alteration during thermal demagnetization
Author(s) -
Dekkers M. J.
Publication year - 1990
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/gl017i006p00779
Subject(s) - pyrrhotite , magnetite , hematite , geology , pyrite , demagnetizing field , greigite , mineralogy , geochemistry , diffraction , materials science , magnetization , magnetic field , optics , paleontology , physics , quantum mechanics
Pyirhotite progressively oxidizes via magnetite to hematite during thermal demagnetization of porous artificial samples containing well‐defined natural pyrrhotite. Rockmagnetic and X‐ray diffraction determinations show that the intermediate alteration stages consist of pyrrhotite‐magnetite‐pyrite intergrowths. Alteration is quite differently expressed in two ctaiically virtually identical pyrrhotites.