Ok so Gold was scattered over the Univers by a Super Nova. Gold and Quartz deposited in Fractured Rock making Stingers ,Seams and Veins. They say the Temps of the Carrer waters was like 600F. What Carried the Gold? Only a few acids can strip !
Don't forget the tremendous pressures that solution is under. Solubility increases greatly under pressure: temperature and acidity aren't as critical as they would be under normal atmospheric pressure.