Abstract
Four natural chromite samples (LBS13‐04, LBS13‐06 and LBS13‐13) from the Luobusa ophiolite (China) and 16SW2‐6 from the Stillwater Complex (USA) were developed as reference materials for in situ element microanalysis. Approximately 8 g of chromite fragments with grain sizes of 0.5–1.5 mm from each chromite sample were separated under a binocular microscope and analysed by EPMA, XRF, LA‐ICP‐MS and solution nebulisation ICP‐MS techniques for major and trace elements at six laboratories. The results show that the four chromite samples are homogeneous with respect to MgO, Al2O3, Cr2O3, FeO, Sc, Ti, V, Mn, Co, Ni, Zn and Ga. These samples are thus suitable to be used as reference materials for in situ microanalysis.
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