Magnetic Mineralogy 2

Magnetic Mineralogy 2: IRM acquisition curves

IRM acquisition curves, measured up to a maximum field of 1.5T, show that dust samples from Owens Lake (T62-93) are saturated in a field < 300mT. Samples more distant from the lake, however, are still gaining IRM in fields > 300 mT and are often not saturated at 1.5T. This indicates the presence of an additional "magnetically hard" phase, such as goethite or hematite. IRM acquisition curves

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IRM acquisition curves, measured up to a maximum field of 1.5T, show that dust samples from Owens Lake (T62-93) are saturated in a field < 300mT. Samples more distant from the lake, however, are still gaining IRM in fields > 300 mT and are often not saturated at 1.5T. This indicates the presence of an additional "magnetically hard" phase, such as goethite or hematite.
Go back to thermal demagnetization curves	Go to S-ratios