I think this one is a little eaier than grasping the previous concept.

Geoprof, I can use one of your previous posts that answers this readily:

Lets look at BB1. From microprobe analyses of the chromite we know that it contains 35.5% Cr (51.9% Cr2O3)with a Cr:Fe ratio of 1.72. Hence, it contains 20.6% Fe. Combined Cr+Fe=56.1%. One drill core intersection assay gave 39.1% Cr2O3==>75 wt% chromite.

Therefore, 1 tonne chrome ore contains 0.75 x 2204=1653 lb chromite

56.1% Cr+Fe per lb chromite=927 lb Cr+Fe (i.e. ferrochrome)

Thanks again,

Milsy1

Disclaimer: Chemistry and Physics were not my strong suits. Thanks again to our in house experts.