Massive chromatite occurs commonly in ophiolite sequences, and in this document internet access is given to unpublished ophiolitic chromite data from the Bay of Islands ophiolite of Western Newfoundland and the Thetford ophiolite of the Eastern Townships of Quebec.  The Bay of Islands data is derived from the Ph.D. thesis of Luca Riccio (Riccio, Luca 1976. Stratigraphy and Petrology of the Peridotite-Gabbro component of the Western Newfoundland Ophiolites. Ph.D. Thesis, University of Western Ontario, 265 p.), whereas the Thetford data is taken from the Hounours B.Sc. thesis of Joanna Sharpe (Sharpe, Joanna L., 1983. Chromitite and Associated Ultramafic Rocks, Black Lake, Quebec. Thesis, Honours Bachelor of Science, University of Western Ontario, 73 p.).  I hope eventually to include a discussion of an important data set for the massive chromite units of the so-called 'Ring of Fire' cumulate bodies of Northern Ontario, that are currently being studied and described by Jordan Laarman, a PhD student at Western University.
        An earlier paper by Church and Riccio  (Church, W.R. and Riccio, L. 1977. Fractionation trends in the Bay of Islands ophiolite of Newfoundland: polycyclic cumulate sequences in ophiolites and their classification. CJES 14, 1156-1165) classified ophiolites in terms of the crystallization sequences observed in ophiolites in general, as well as the specific nature of the trends in FeO/MgO ratio of both residual mantle and cumulate olivine, clinpyroxene and spinel, and TiO2 in clinopyroxenes.