It is impossible to tell the grade of a rock sample frtom a visual inspection. One can use physical characteristics such as presence or absence of breciation and its intensity etc. to tell if it is mineralized and make a guess as to the amount of mineral present. One must be careful and examine the sample closely. To make decisions or draw conclusions based on a visual inspection is risky and can be embarrasing.

This happened for Viceroy. Since one DD hole, in the heart of the deposit had clay alteration, it was automatically assumed by that it was barren of value, which was a real bummer that echoed all the way to Vancouver and the stock price fell on a leak.

When thew new mine manager came out and mentioned the disaapointment of the first reports about this hole, I was shocked and walked him over to the core and said, "this is ore from here to here", it turned out that I was right and based on that incident and other factors, I was chosen as the first Mine Geologist for the mine.

One can only guess and to put any more weight on it than that is foolishness.