Alternative SEM techniques for observing pyritised fossil material

Two scanning electron microscopy (SEM) electron–specimen interactions that provide images based on sample crystal structure, electron channelling and electron backscattered diffraction, are described. The SEM operating conditions and sample preparation are presented, followed by an example applicati...

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Published in:Review of palaeobotany and palynology 2000-11, Vol.112 (4), p.287-295
Main Authors: Poole, Imogen, Lloyd, Geoffrey E.
Format: Article
Language:English
Subjects:
crystal orientation
fossil
plant
pyrite
SEM
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description Two scanning electron microscopy (SEM) electron–specimen interactions that provide images based on sample crystal structure, electron channelling and electron backscattered diffraction, are described. The SEM operating conditions and sample preparation are presented, followed by an example application of these techniques to the study of pyritised plant material. The two approaches provide an opportunity to examine simultaneously, at higher magnifications normally available optically, detailed specimen anatomy and preservation state. Our investigation suggests that whereas both techniques have their advantages, the electron channelling approach is generally more readily available to most SEM users. However, electron backscattered diffraction does afford the opportunity of automated examination and characterisation of pyritised fossil material.
doi_str_mv 10.1016/S0034-6667(00)00047-6
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subjects crystal orientation
fossil
plant
pyrite
SEM
title Alternative SEM techniques for observing pyritised fossil material
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