Need to be carful. The density can vary a lot. In New Caledonia 1.5 is not bad but in Indonesia it's more like 1.0. It was a surprise to me when i first hit the low densities but they persists across Sulawesi, Halmahera and beyond.
It's an area I am very cautius about now
Do we know what the moisture content of the saporolite is?