" Chalcocite mineral has approximately 80% copper by weight...

" Chalcocite mineral has approximately 80% copper by weight compared to 34.5% copper in chalcopyrite (Figure 1).  Similar MFBZ’s cutting the main MQCV may have been intersected by 2023 RC drill holes 23MERC030 and 23MERC024, but this is yet to be confirmed by further drilling. "

Chalcocite is an important ore of copper and a secondary mineral in or near the oxidized zone of copper sulfide deposits. It has been mined for centuries and is one of the most profitable copper ores because of its high copper content (nearly 80% by weight) and the ease at which copper can be separated from sulfur.