Indexed on: 01 Oct '98Published on: 01 Oct '98Published in: Contributions to mineralogy and petrology. Beitrage zur Mineralogie und Petrologie
The Mössbauer milliprobe allows the determination of Fe3+/ΣFe in samples as small as 50 μm. For the first time this technique is applied to a suite of diamonds of eclogitic paragenesis, where three garnet and five clinopyroxene inclusions in diamonds from George Creek, Colorado have been analysed. For garnet Fe3+/ΣFe ranges from 0–7%, while values for clinopyroxene range from 8–14%. These results are consistent with the low oxygen fugacity conditions implied by the presence of the inclusions in diamond.