Why is petroleum called black gold?

Question

Why is petroleum called black gold?

Answer 1

Crude oil is black when it comes out of the ground.  When someone found oil, they had struck it rich, so they began calling it black gold.

Answer 2

Gold means costly material. The oil has come from coal only. So the costly black material is called black gold.

Answer 3

errr... i think you will find thats crude oil, and its because you dig for it and its worth alot of money, but its hard to find.

Answer 4

wait for 1-2 yrs ppl will start calling gold as yellow petroleum

Answer 5

it's called black gold because it's a very lucrative business

Answer 6

Any business that makes a lot of money is sometimes referred to as a goldmine.

Oil wells can make you lots of money.

Oil coming out of the ground is black in color because of all of the dirt.

hence

Black Gold