This quote from Wikipedia, http://en.wikipedia.org/wiki/Iron_ore
"Magnetite concentrate grades are generally in excess of 63% Fe by weight and usually are low phosphorus, low aluminium, low titanium and low silica and demand a premium price."
This contrasts with what you say.
"But, magnetite trades at a significant justifiable discount and is becoming far more accepted."
I'd be very interested to know the source of your information.
Provided metallurgical studies confirm that it can be upgraded to the necessary purity, magnetite commands a premium price. I know that this is the case for product from Savage River.
