A number of microanalytical reference materials are available for purchase from IAGeo Limited, most of which are from our collaboration with the Mineralogical and Geological Museum, Harvard University. A single aliquot consists of approximately 100 mg of material.
The set of 3 tourmalines (dravite, schorl, elbaite) characterised for Li, B and O isotopes can also be found under Isotope Ratio RMs.
Reference Materials for Electron Microprobe
In the early 1990s a number of Harvard materials were characterised for use as RMs specifically for the analysis of oxygen concentration as determined by electron microprobe. These are described in McGuire et al. (1992). Because of lack of demand, most of these materials have now been returned to Harvard Mineralogical and Geological Museum and only a limited range are available from IAGeo Limited:
| Purchase Code | Name | Material | *Price |
| Biotite 131627 | Harvard 131627 | biotite | 150 GBP |
| Muscovite 112791 | Harvard 112791 | muscovite | 150 GBP |
| Quartz 122838 | Harvard 122838 | quartz | 150 GBP |
| *discount available to IAG members | |||
Reference Materials for Light Elements
In the early 2000s a suite of mineral phases was characterised for their light element contents and isotopic compositions. These are described in Dyar et al. (2001) and Leeman et al. (2001). The minerals still available from IAGeo Limited are:
| Purchase Code | Name | Material | *Price |
| Dravite 108796 | Harvard 108796 | dravite tourmaline | 300 GBP |
| Elbaite 98144 | Harvard 98144 | elbaite tourmaline | 300 GBP |
| Schorl 112566 | Harvard 112566 | schorl tourmaline | 300 GBP |
| Tourmaline Set | Tourmaline Set | dravite / elbaite / schorl (1 unit of each) | 450 GBP |
| Muscovite 98973 | Harvard 98973 | muscovite | 150 GBP |
| *discount available to IAG members | |||
References for EPMA materials:
McGuire, A.V., Francis, C.A. and Dyar, M.D. (1992). Mineral standards for electron microprobe analysis of oxygen. American Mineralogist, 77, 1087-1091.References for light elements:
Dyar, M.D., Wiedenbeck, M., Robertson, D., Cross, L.R., Delaney, J.S., Ferguson, K., Francis, C.A., Grew, E.S., Guidotti, C.V., Hervig, R.L., Hughes, J.M., Husler, J., Leeman, W., McGuire, A.V., Rhede, D., Rothe, H., Paul, R.L., Richards, I. and Yates, M. (2001). Reference minerals for microanalysis of light elements. Geostandards Newsletter, 25, 441-463.Leeman, W.P. and Tonarini, S. (2001). Boron isotopic analysis of proposed borosilicate mineral reference samples. Geostandards Newsletter, 25, 399-403.