Oil.
Gold was found by our ancient ancestors in many locations, but as man came out of Africa one could surmise that African gold was the first gold to be found by man.
Hippocrates
The English surname of Blackman is first found in Durham.
it was first mined by placer mining method of washing the dirt from around the small pieces of gold found in creeks.
It was first found in iran i think
1998
I n Pennsylvania
Petrolia, Ontario, Canada
Oil was first found in Spindletop
Potash was first found in 1942 while oil drilling.
was first found in babalon about 4000 yrs ago and was used for asphalt, the first oil wells were created in china around 350ce
Gold was found as early as 1848 and Oil at that time had it been known of at all had no use, no demand and therefore no value.
Gasoline is found in the earth. it is made out of gas and oil, mostly oil, and it is found in the same place as where oil is found.
Concerning the US, oil first was discovered in Pennsylvania. Later Ohio came into the picture. At one time Texas itself meant "oil" On the world stage I believe oil was first discovered in Greece.
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Oil was found in Nigeria in 1956.