Liberty Star Uranium and Metals Corp (LBSR)

[ValuePro]

Not all porphyry deposits have gold. What you say is true.

In this case, however, we are talking about a porphyry deposit (Pebble) associated with caldera formation. The rule of thumb regarding such is that the porphyries in a caldera formation tend occur in clusters of uniform size and mineral content scattered around the perimeter of the caldera.

There may also be smaller associated porphyries inside the caldera, and at some distance from it. These may have wider variations in mineral content.

Therefore, if you find a porphyry deposit such as Pebble, and later find that it is part of a caldera formation (Big Chunk), odds are there will be multiple occurrences, or near mirror images of Pebble around the caldera.

The above is basic mining geology that seems to require repeated mention here.