| | | in Butte, Montana (USA), in the Lake Superior region, Michigan, and in Yugo- slavia; bedded deposits...cobalt-nickel ores. Another famous locality in this region is Kutna Hora, and the area of the Giant Mountains...ores. For instance, the deposits in the Siegen region (West Germany) and in the Slovak Ore Mountains...secondary sulphates, most frequently gypsum and melanterite (Green Vitriol), are formed. Crude petroleum...(northern England; Halle, German Demo- cratic Republic). In spite of a rather low content of iron, siderite |
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