I've been writing here a few times about a pending shortage is zinc. While all base metals were up today, as were precious metals, zinc was up 10.3 percent. I can't recall having see a 1-day move that large. Lead, too, made a large move, 6.3 percent. That both would make big moves at the same time is not unusual in itself as they often occur in the same mineral deposits.
As a "for what it's worth, copper today was up 2.8 percent.
News from various other sources this evening is predicting an up week for metals next week too. We shall see.
VP