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Nickeliferrous laterite is a source of ferronickel alloy extracted by a pyro-metallurgical process. Laterite deposits found in Greece are mainly secondary depositions and their nickel content is about 1\%. Beneficiation of the run of mine ore is limited to the +1 mm fraction by magnetic or gravitational processes and its effect is rather unsatisfactory due to the insufficient liberation of the nickel bearing minerals. The mineralogical structure of the ore consists mainly of hematite nodules (pissoids) and quartz ...