Asking what disseminated sulphides will grade is like asking for...

Asking what disseminated sulphides will grade is like asking for the length of string. Depends on the length....

I assume you mean copper.

So, diss sulphides can give assays anywhere from 0.1% Cu to maybe a couple % Cu.

Stinger chalcopyrite veins give better assays, but are more "nuggety" in distribution.

Massive and semi-massive sulphides are preferred because the Cu grade will not vary as much in a stringer or disseminated system.

Diss systems can be economic when coupled with zones of economic Cu, eg thin massive sulphide lenses or high grade copper faults. Without a higher grade area (or open pit depth) diss sulhides generally are more trouble than their worth.