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By Professor Günther H. Friedrich, Professor Alexandr D. Genkin (auth.), Professor Günther H. Friedrich, Professor Alexandr D. Genkin, Professor Anthony J. Naldrett, Professor John D. Ridge, Dr. Richard H. Sillitoe, Professor Frank M. Vokes (eds.)
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1979) outline several models for the generation of Australian Archaean Ni-sulfide deposits, and include sulfur derivation from metasedimentary host rocks for many of the deposits. Addition of sedimentary sulfur and carbon along contact zones has also resulted in the localization of sulfide minerals in the Rana intrusion of Norway (Boyd and Mathiesen 1979). Recent isotopic and chemical studies of the Sudbury ores (Rao et al. 1984) also highlight the role of country rock contamination in the genesis of these important deposits.
00104 a Measurements of apparent maximum length and width made in thin section on 2,419 sulfide grains. (Modified from Weiblen and Morey 1976). monly contains included sulfide. Olivine grains are mantled with myrmekite-like overgrowths of orthopyroxene and sulfide. The sizes of sulfides in voids varies widely as a function of the size of the plagioclase framework (Table 1). Sulfide modes vary greatly but averaged about 55070 pyrrhotite, 37% chalcopyritecubanite, and 8% pentlandite. This average mode is much less copper-rich than the other sulfide types and must indicate a unique sulfide composition.
Econ Geol 75:765 -766 Huppert HE, Sparks RSJ (1980) The fluid dynamics of a basic magma chamber replenished by hot, dense ultrabasic magma. Contrib Mineral Petrol 75:279 - 289 Irvine TN (1977) Origin of chromite layer in the Muskox Intrusions and other stratiform intrusions: a new interpretation. Geology 5:273 - 277 Irvine TN (1980) Magmatic infiltration metasomatism, double diffusive fractional crystallization, and adcumulus growth in the Muskox intrusion, and other layered intrusions. In: Hargraves RB (ed) Physics of magmatic processes.