The 1,500m will require MRP to re-mobilise the drill rig I imagine. As they have stated they will continue drilling the 'Southern Stock Work' and continue extend the strike length. They have indicated possible 50m width i.e. 20m+either side of the shear... and again will require more drilling. Mt Charlotte also had a higher grade ~ 3.7 g/t. So a lot of more milestones MRP will have to hit to really impress the market. Well fingers crossed for some spectacular drilling results.
Specific Gravity of quartz is between 2.5-2.6 according to what I have read. But the density of dolerite quartz at Boorara could be higher i.e 2.8 as O stated, I have to check what MRP has stated.