““A widely accepted theory predicts that stars like this, with low mass and extremely low quantities of metals, shouldn’t exist because the clouds of material from which they formed could never have condensed,”[2]”
http://www.eso.org/public/news/eso1132/
The gas and dust clouds from which stars form typically require some sort of external trigger such as a nearby supernova explosion or spiral arm gravitational wave in order to condense into stars. Perhaps this sort received an especially large external force. Perhaps it was very close to the exploded super nova or in a ‘special’ location within a spiral arm?
He is still getting a kick out of our evolution fantasy.
It would depend too on where this star is in the galaxy. If it´s in the outer reaches/limbs one would expect it to be less enriched in heavier elements.
Low on lithium???? Time for the old shock treatment then.