If $Rio Tinto Ltd (RIO.AU)$ is willing to pay $2.7 B for the...

If $Rio Tinto Ltd(RIO.AU)$ is willing to pay $2.7 B for the rest of Turquoise Hill basically 25% of Oyu Tolgoi. How much is $IVN Ivanhoe's stake in Kamoa worth? Not to mention the Western Forelands upside.
Also $BHP Group Ltd(BHP.AU)$ is going to buy $FILO.TO Filo Mining for a $ that shocks everyone in 2-3yrs