I found this in Frances Moore Lappe's book "Diet for a Small Planet"
brown white
protein 7.5 g 6.7 g
calcium 32 mg 24 mg
phosphorous 221 mg 94 mg
iron 1.6 mg 0.8 mg
potassium 214 mg 92 mg
sodium 9 mg 5 mg
thiamin 0.34 mg 0.07 mg
riboflavin 0.05 mg 0.03 mg
niacin 4.7 mg 1.6 mg
if you use enriched white rice, the numbers for iron, niacin, and
thiamin go up, but that's it.
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