I want to know the answer to the following question:
How old are the ore deposits in the Oklo mine?
All the background I'm provided with is that "In 1972, the French physicist Francis Perrin discovered fifteen ancient and no longer active natural nuclear fission reactors in three separate ore deposits at the Oklo mine in Gabon, West Africa, collectively known as the Oklo Fossil Reactors.". Is that enough to answer the question?