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Report on the Geology & Gold Fields of Otago

Port Molyneux

Port Molyneux.

This specimen is hydrated sesquoxide of iron from Port Moly neux. It yielded:—
Water 14 per cent.
Oxide of Iron 65.5 per cent.
Earthy matter (clay silica) 20.5 per cent.
This is equal to 46 per cent. of metallic iron. If there is a large quantity of this ore near a good coal field, it should take a good place among the industries of the future. The small quantity of silica present (about 10 per cent.) will not require much lime for its removal.