Smithsonite is almost always a secondary element. Pure Smithsonite should be white or colorless, but is usually a yellow, green, or even pinkish color. It was named for James Smithson (1765-1829), a British mineralogist and chemist who bequeathed money to the United States Government to start The Smithsonian Institution.
The Children's Museum of Indianapolis
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Smithson, James, 1765-1829
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