I only know black gold from the Beverly Hillbillies…
Come and listen to my story about a man named Jed
A poor mountaineer, barely kept his family fed,
And then one day he was shootin at some food,
And up through the ground come a bubblin crude.
Oil that is, black gold, Texas tea.
Well the first thing you know ol Jed’s a millionaire,
The kinfolk said “Jed move away from there”
Said “Californy is the place you ought to be”
So they loaded up the truck and they moved to Beverly
Hills, that is. Swimmin pools, movie stars.
Actually oil is known as black Gold, but there are more black Gold on the planet. Sorry but that is not answer I’m looking for. Thank you for your response

I watched this show all the time when I was young. Black & white TV.
We adopted a Blue Heeler, and her name is Ellie Mae after the girl on Beverly Hillbillies. My middle name is Mae. How sweet❣❣