What did John Casper Branner discover in Arkansas in 1887?
Gold
Diamonds
Bauxite
Coal
Answer
John Casper Branner discovered bauxite, a sedimentary rock with high aluminum content, in Arkansas in 1887 while serving as State Geologist for the Geological Survey of Arkansas. Bauxite is the primary source of aluminum and is used in various industries, including the production of aluminum metal and aluminum-based products.
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