Hi,

I’d appreciate from hearing from anyone with experience analyzing siderite and ankerite.

I have been reviewing the Handbook of Stable Isotope Techniques vol. 2 which seems to suggest that about 120 hours of equilibration at 70 oC is required for ankerite and siderite prior to analysis.

We will have our samples in exetainers, so I’d appreciate hearing from anyone who has analyzed these minerals in exetainers, and has any advice on stability of the samples in the exetainers (leakage etc.) prior to analysis.

Should we acidify and equilibrate the calcite standards for the same period of time, or do this for the standard time (e..g. 1 hour at 70 oC).

Can we shorten the time by heating at an elevated temperature (e.g. 110 oC)?

Thanks,

Shaun


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Dr Shaun Barker
Senior Lecturer, Earth Sciences
School of Science
University of Waikato
Private Bag 3105
Hamilton 3240
New Zealand
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Ph: + 64 7 838 4514
http://www.geochemistry.co.nz