The purpose of my question about "continuity" between the skarn and porphyry, should they be economic to mine, was for JB to demonstate to listeners that if there is ore grade material 200-300 feet below the surface at Hay Mountain, that it is likely to run to depth, 5,000 feet or more, and indeed that does seem to be case.

What we may be talking about, then, is skarn at and near surface (as altered and perhaps enriched porphyry, porphyry being at depth), but with the likelihood that mineralization expresses continuity throughout, though grade may diminish with depth (just like the Lavender pit at Bisbee).

JB never used the term "supergene enrichment", but this is what it likely to be discussed later, I'm sure.

https://en.wikipedia.org/wiki/Supergene_%28geology%29

Again, larger and richer than Bigham Canyon? We shall see.

VP