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Characterization of hematite (a-Fe2O3), geothite (a-FeOOH), greigite (Fe3S4), and pyrrhotite (Fe7S8) using first-order reversal curve diagrams

Roberts, Andrew; Liu, Qingsong; Rowan, Christopher J; Chang, Liao; Carvallo, Claire; Torrent, Jose; Horng, Chorng-Shern


First-order reversal curve (FORC) diagrams have become a standard tool in rock magnetism, yet magnetite is the only magnetic mineral that is well characterized using FORC diagrams. We present FORC diagrams for predominantly single-domain (SD) synthetic aluminous hematite (α-Fe2-xAlxO3) and goethite (α-(FeA1)OOH) and natural greigite (Fe3S4) and pyrrhotite (Fe7S8) to constrain interpretation of FORC diagrams from natural samples. Hematite and goethite have low spontaneous magnetizations and...[Show more]

CollectionsANU Research Publications
Date published: 2006
Type: Journal article
Source: Journal of Geophysical Research
DOI: 10.1029/2006JB004715


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