Yhteisömiitti-6.11.2012

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Versio hetkellä 18. marraskuuta 2012 kello 14.22 – tehnyt 195.250.48.245 (keskustelu)

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Monado:You were right the first time, the iron ore pellets that you see sphpied are in fact made by grinding up ores, concentrating the iron oxide fraction, and then forming the pellets into balls that are fired to harden them. The similar appearance of the south african nodular hematite above is just a coincidence.(I spend a lot of time working with the iron mines around Lake Superior, that produce several million tons of iron ore concentrate pellets every year. So I'm rather intimately familiar with the process)

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