The IAG supports an ongoing programme for the characterisation and distribution of high quality materials targeting the calibration of isotope ratio determinations based on in situ analytical methods. These include tourmalines characterised for Li, B and O isotope ratios and apatites for Cl ratios. In addition, apatites MGMH#133648 and MGMH#128441A have been characterised for oxygen isotopes as well.
A single aliquot consists of approximately 100 mg of material.
The apatite samples cover almost the full compositional space of the F-Cl-OH system as shown in the ternary plot.
New additions to our list of mineral reference materials are some sulphate minerals (anhydrite, gypsum and barite) characterised for δ18O and δ34S. These can be purchased individually or in sets consisting of either two anhydrites, two gypsums or three barites. Full details of their characterisation can be found in Li et al. (2023) – see list of references below.
In all cases, a single aliquot consists of approximately 100 mg of sub-1.4 mm material.
The Durham Romil Osmium Solution (DROsS) prepared at the University of Durham, UK, as an osmium isotope reference solution is also available through the IAG.
| Purchase Code | Material(s) | Isotope systems | Citation | *Price |
| Apatite TUBAF#37 | TUBAF#37 |
δ37Cl |
Wudarska et al. (2021) | 150 GBP |
| Apatite TUBAF#38 | TUBAF#38 |
δ37Cl |
Wudarska et al. (2021) | 150 GBP |
| Apatite TUBAF#40 | TUBAF#40 |
δ37Cl |
Wudarska et al. (2021) | 150 GBP |
| Apatite TUBAF#50 | TUBAF#50 [a] |
δ37Cl |
Wudarska et al. (2021) | 300 GBP |
| Apatite MZ-TH | MZ-TH |
δ18O |
Wudarska et al. (2022) | 150 GBP |
| Apatite ES-MM | ES-MM |
δ18O |
Wudarska et al. (2022) | 300 GBP |
| MGMH Apatite set | MGMH#133648, MGMH#128441A |
δ37Cl, δ18O |
Wudarska et al. (2021, 2022) | 450 GBP |
| Anhydrite 13491 | Anhydrite 13491 |
δ18O, δ34S |
Li et al. (2023) | 150 GBP |
| Anhydrite 40347 | Anhydrite 40347 |
δ18O, δ34S |
Li et al. (2023) | 150 GBP |
| Anhydrite set of 2 | Anhydrites 13491 and 40347 |
δ18O, δ34S |
Li et al. (2023) | 200 GBP |
| Barite 14898 | Barite 14898 |
δ18O, δ34S |
Li et al. (2023) | 150 GBP |
| Barite 16921 | Barite 16921 |
δ18O, δ34S |
Li et al. (2023) | 150 GBP |
| Barite 48628 | Barite 48628 |
δ18O, δ34S |
Li et al. (2023) | 150 GBP |
| Barite set of 3 | Barites 14898, 16921 and 48628 |
δ18O, δ34S |
Li et al. (2023) | 300 GBP |
| Gypsum 16655 | Gypsum 16655 |
δ18O, δ34S |
Li et al. (2023) | 150 GBP |
| Gypsum 37603 | Gypsum 37603 |
δ18O, δ34S |
Li et al. (2023) | 150 GBP |
| Gypsum set of 2 | Gypsums 16655 and 37603 |
δ18O, δ34S |
Li et al. (2023) | 200 GBP |
| Osmium solution | DROsS |
Os |
Luguet et al. (2008) | 150 GBP |
| Tourmaline set | Dravite, Schorl, Elbaite [b] |
δ7Li, δ11B, δ18O |
Leeman and Tonarini (2001), Wiedenbeck et al. (2021) | 450 GBP |
| *discount available to IAG members | ||||
Notes:
[a] There is very limited supply of this particular material and we therefore ask scientists interested in purchasing it to provide evidence of previous work on this isotope system.
[b] These are the same materials as described under in the section headed “Reference Materials for Light Elements” under Microanalytical Reference Materials
References for Isotope Ratio materials:
Li B., Wiedenbeck M., Couffignal F., Álvarex-V A M., Bao H-M., Fan C-F., Han J., Jin G-S., Peng Y-B., Syczewski M.D., Tait K.T., Feng D., Wilke F.D.H. and Wortmann U.G. (2023). Barite, anhydrite and gypsum reference materials for in situ oxygen and sulfur isotope ratio measurements. Geostandards and Geoanalytical Research doi.org/10.1111/ggr.12533
Leeman W.P. and Tonarini S. (2001). Boron isotopic analysis of proposed borosilicate mineral reference samples. Geostandards Newsletter, 25(2-3), 399-403
Luguet A., Nowell G.M. and Pearson D.G. (2008). 184Os / 188Os and 186Os / 188Os measurements by Negative Thermal Ionisation Mass Spectrometry (N-TIMS): Effects of interfering element and mass fractionation corrections on data accuracy and precision. Chemical Geology, 248(3-4), 342-62
Wiedenbeck M., Trumbull R.B., Rosner M., Boyce A., Fournelle J.H., Franchi I.A., Halama R., Harris C., Lacey J.H., Marschall H., Meixner A., Pack A., Pogge von Strandmann P.A.E., Spicuzza M.J., Valley J.W., Wilke F.D.H (2021). Tourmaline reference materials for the in situ analysis of oxygen and lithium isotope ratio compositions. Geostandards and Geoanalytical Research, 45/1, doi.org/10.1111/ggr.12362.
Wudarska A., Słaby E., Wiedenbeck M., Barnes J.D., Bonifacie M., Sturchio N.C., Bardoux G., Couffignal F., Glodny J., Heraty L., John T., Kusebauch C., Mayanna S., Wilke F.D.H., Deput E. (2021). Inter‐laboratory characterisation of apatite reference materials for chlorine isotope analysis. Geostandards and Geoanalytical Research, doi.org/10.1111/ggr.12366.
Wudarska A., Wiedenbeck M., Słaby E., Lempart-Drozd M., Harris C., Joachimski M.M., Lécuyer C., MacLeod K.G., Pack A., Vennemann T., Couffignal F., Feng D., Glodny J., Kusebauch C., Mayanna S., Rocholl A., Speir L., Sun Y., Wilke F.D.H. (2022). Characterisation of apatite reference materials for oxygen isotope analysis and associated methodological considerations. Geostandards and Geoanalytical Research doi.org/10.1111/ggr.12416