This occurred so long ago that it is unlikely that anyone knows. According to wikipedia, the oldest sample of silver that was unearthed by people was found in Asia Minor. You might wish to read the relevant part of the wikipedia article about silver.
The element argon was discovered in 1894.
The element Boron was discovered in Paris.
The element niobium was discovered by Charles Hatchett in the year 1801. He discovered the element by analyzing a piece of columbite in a museum's collection.
where was the element nickel discovered??
Water is not an element
Francium (Atomic Number 87), the Last Discovered Natural Element
The element argon was discovered in 1894 by Lord Rayleigh and William Ramsay.
Element number 6 was one of the first elements discovered, so it is not widely known who discovered it.
it was discovered in London, England.
Hydrogen was discovered.
Helium
The element einsteinium was discovered in December 1952 by Albert Ghiorso and co-workers.