Figure 5 - uploaded by Tiatoshi Jamir
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a, Material samples of bog iron ore from Malai Dai. b, Textural changes in iron ore (Malai Dai) in a furnace at 160°C. c, Textural changes in iron ore from Malai Dai in a furnace at 1200°C.

a, Material samples of bog iron ore from Malai Dai. b, Textural changes in iron ore (Malai Dai) in a furnace at 160°C. c, Textural changes in iron ore from Malai Dai in a furnace at 1200°C.