Human settlement in Estonia became possible 13,000 to 11,000 years ago, when the ice from the last glacial era melted. The oldest known settlement in Estonia is the
Current List: Each month, we offer an abbreviated selection of minerals from our inventory of over 200,000 samples. If you don't see what you're
Naturally Occurring Radioactive material, natural materials contain radioactive elements (radionuclides), known as NORM. The earth's crust is radioactive. Information
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Mining in Iran is underdeveloped, yet the country is one of the most important mineral producers in the world, ranked among 15 major mineral-rich countries, holding