Gold densityPure 24 Karat gold has a density of 19,230,000 g/m3 or 19.23 tonnes/m3. That is an impressive number but without a volume number to go with it, it is a rather meaningless number. A speck of 24 Karat gold on a microscrope slide will give you the exact same number.
Gram metres/tonne shortened to gram metres is just another density measurement. It is used in exploration to compare the richness of intercepts. Once again without a volume number to go with it, it tells to nothing about the mass of gold which is actually present.
NFG has a lot of high density measurements (more than most) but what we shareholders really need are volume numbers and we're not likely to get them from management. The best we can do is make guesstimates based on what little information that we are given.
Some of the bloggers on this forum have a fascination with density measurements.