For reference pyrrhotite dominance is nothing unusual. This is...

For reference pyrrhotite dominance is nothing unusual.  This is straight from IGO’s website about the Sirius discovered  Nova-Bollinger  deposit:

http://www.igo.com.au/irm/content/nova-project.aspx?RID=503

(About Nova-Bollinger deposit);
“The nickel-copper mineralisation is interpreted to have formed initially as a typical magmatic segregation Ni-Cu deposit. The sulphide assemblage of the ore mineralogy consists of pyrrhotite (~80-85%), pentlandite (~10-15%) and chalcopyrite (5-10%).”


GBR have found a huge magmatic sulphide system here - the extent and depth is still unknown. Yes it’s pyrrhotite dominant but they also have chalcopyrite and pentlandite. The mix of these can and will vary in different parts of the mafic intrusion.

They are at the very start of exploring it.

Upside galore.