Abstract
Abstract The author discusses the problem of “ball textures” in sulphide ores and suggests an alternative explanation to that proposed by Geijer (1971) for the Swedish Precambrian kulmalmer. Similar ore types in the Norwegian Caledonides seem to be the products of the extreme deformation of sulphide ores formed during the pre-orogenic, volcanic-sedimentary stage of the development of the Caledonian geo-synclinal belt.
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