Joana Limestone
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The Joana Limestone is a limestone geologic formation in White Pine County and Nye County Nevada.
Description
The Joana Limestone was named for exposures at the Joana Mine on the south side of Robinson Canyon, 2 miles north of Ely, Nevada.
It was formed during the Early Mississippian series of the Carboniferous Period.
It preserves fossils dating back to the Carboniferous period.