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Mineralogical Magazine; April 2004; v. 68; no. 2; p. 323-333; DOI: 10.1180/0026461046820189
© Mineralogical Society of Great Britain and Ireland
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FIG. 11. Optical smearing at the interface between pyrite and sphalerite (cf. zoomed circle) is responsible for the appearance of virtual ‘chalcopyrite’ (‘Cp’) and ‘pyrrhotite’ (‘Po’) rims after image classification. This effect due to mixed pixels spectra (mixels) can be removed in practice through posterior filtering.





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