TRONA SPECIMENS

Trona is a non-marine evaporative mineral that is mined as the primary source of sodium carbonate. It can be found in the Ankara Province of Turkey, the Henan Province of China, the Green River Formation of Wyoming, the Kenyan Rift Valley, Nile Valley in Egypt, Owens Lake in California, and many more locations, primarily as evaporative deposits within the upper lithosphere. The Green River trona deposit is by far the largest known deposit in the world, with significant amounts of trona that was laid down by the lake during the Paleogene Period.
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