Mmm perhaps, from what I can see bark looks pretty whitish. Although I could be persuaded as phone view isn't always the best, either way some closer up shots would be quite useful
This was such an outstanding redgum I had to take a pic - getting one of foliage was just about impossible though because of the height and no way way was it a rossii or mannifera. Getting on to to Fairvale again (which is where this was taken, not Bullen Range) will be a long time away. Bark mottling as tapirlord says...