Magnetic transition at 30-34 Kelvin in pyrrhotite: insight into a widespread occurrence of this mineral in rocks

Details Magnetic transition at 30-34 Kelvin in pyrrhotite: insight into a widespread occurrence of this mineral in rocks Magnetic transition at 30-34 Kelvin in pyrrhotite: insight into a widespread occurrence of this mineral in rocks

Jun 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990e%26psl..98..319r&link_type=abstract

Earth and Planetary Science Letters, Volume 98, Issue 3-4, p. 319-328.

Mathematics

Logic

91

Scientific paper

A characteristic magnetic transition at 30-34 K is shown to provide a powerful tool for the identification of pyrrhotite with concentration down to 10 ppm through the same low-temperature techniques as applied to magnetite and hematite, extended down to liquid helium temperature. A review of rock magnetic and petrological data on pyrrhotite suggests that this mineral should be considered as a major carrier of paleomatnetic signals. Unblocking temperature up to 350°C and extreme resistance against AF may be encountered in fine grained pyrrhotite.

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