Osmium Isotope Heterogeneity in Os-Ir-Ru Inclusions within Platinum-Iron Alloy Placer Grains from the Freetown Layered Complex; Sierra Leone
J. L. C. Stewart, I. C. Lyon, D. J. Vaughan, J. M. Saxton and J. F. W. Bowles
Dept. Earth Sciences, The University of Manchester, Manchester, M13 9PL. UK
Mineral Science Ltd. Chesham, Bucks, HP5 2PZ. UK.