Mali Empire

There were three major gold mines within the borders of the Mali Empire.

An excerpt from the article 21 facts about Mali Empire

At the beginning of the 14th century, Mali was the source of almost half of the gold exported to the Old World from the mines of Bambuku, Boure and Galam.

The gold nuggets were the exclusive property of the Manse, and trading them within the borders of the Empire was illegal.

The most common measure of gold in the kingdom was the Mithqāl (4.25 grams of gold).