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I vaguely remember somthing about cleaning oil from hones like this, it started with water and some detergent...
Boiling water and detergent, pressure boiler... kerosine, petrol, acetone... acetone...

Some generic carborundum hone, good for axes and knives.
I wouldn't use the Norton for lapping, some of those hones are quite hard, diamond plate with running water would be my choice.