announcement out, page-96

No worries. A bit more info. Densities are measured in g/cm3 or grams per cubic centimetre.

Water has a Density of 1g/cm3, Granite = 2.64g/cm3, Pyroxenite (mafic rock) = 3.17g/cm3, Hematite = 5.26g/cm3 So a block of water 1 x 1 x 1m in dimension weighs a metric ton, same block of granite weighs 2.64 metric tons and hematite 5.26 tons etc etc.

A large block of hematite will obviously give a different gravity signature to a block of granite. What we don't know is what densities the geophysicists have attributed to the gravity signature they have read under hole 4. They say it is high and higher than what OD returns and OD is hematite plus copper sulphides. Hence my curiosity.

But could also be related to changes in thickness of the layers of rock in that area, like going from a less dense rock into a 'valley' filled with denser rocks like pyroxenite and nothing to do with IOCG deposits.

Hope that helps and lets hope the geology gods smile on us.