Xray Analyses
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Advanced Analytical Centre
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Analytical Facilities
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All Instruments
- X-ray Powder Diffraction (XRD)
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General sample requirements
Xray analyses are made on dried and crushed sample material (typically <50micron crush size. *Hint: final powder should feel smooth like talcum powder when rubbed between fingers (no gritty feel).
Xray Fluorescence
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Major element analysis:
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Requires a fused bead be made
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Ideal homogenized sample weight = 5g
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Minimum sample weight = 2g
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Trace element, fluorine/chlorine and semi-quantitative analyses
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Requires a pressed powder pellet be made
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Ideal homogenized sample weight = 6.5g
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Minimum sample weight = 2g
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Xray Diffraction
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Ideal sample prepared as a pressed powder mount
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Requires at least 1g of dried sample powder
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Small sample volumes prepared as a “smear”
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Typically requires ca. 0.25g
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