Identification of NRM carriers in chromite ores by alternating field and thermal demagnetization studies

Identification of NRM carriers in chromite ores by alternating field and thermal demagnetization studies

Alternating field and thermal demagnetization studies on selected chromite ores show that they can contain two magnetic carriers, viz. the chromite mineral possessing the end member magnetite, and the magnetite occurring as an associate mineral in the ores. The chromite mineral is magnetically hard...

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Veröffentlicht in:Current science (Bangalore) 1994-03, Vol.66 (5), p.373-375
Hauptverfasser: Murthy, I. V. Radhakrishna, Krishnamacharyulu, S. K. G.
Format: Artikel
Sprache:eng
Schlagworte:
Chromites
Curie temperature
Demagnetization
Earth sciences
Earth, ocean, space
Exact sciences and technology
Geophysics: general, magnetic, electric and thermic methods and properties
Hardness
Internal geophysics
Magnetic fields
Magnetite
Minerals
RESEARCH COMMUNICATIONS
Specimens
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Zusammenfassung:Alternating field and thermal demagnetization studies on selected chromite ores show that they can contain two magnetic carriers, viz. the chromite mineral possessing the end member magnetite, and the magnetite occurring as an associate mineral in the ores. The chromite mineral is magnetically hard with a blocking temperature of 350° C. By determining the blocking temperature of the ore and its hardness, the nature of chromite mineralisation in the ore can be ascertained.
ISSN:0011-3891