There's a lot of misunderstanding here about what massive sulfides are and unfortunately Undaunted is closer to being correct than most of you. Although there may be no absolute defined number in WA atleast it's generally accepted that massive sulfides refers to a content of sulfide in a particular interval greater than 80%. Semi-massive 60 to 80%. 1-15% is not even close but that was some of the chalcocite content doesn't say much about other sulfide species. Not the clearest announcement that's for sure.
Ann: Big One - Visible Copper Mineralisation up to 34m Thick, page-72
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