Picuris Pueblo / P'įwweltha, United States of America
The Harding Pegmatite Mine is a former adit mine that extracted lithium, tantalum, and beryllium from a Precambrian pegmatite sill. It ceased operations in 1958 and its owner, Arthur Montgomery, donated it to the University of New Mexico, which runs the site as an outdoor geology laboratory with min
eral collecting permitted on a small scale.
Listen to the audio guide for Harding Mine Free on WIP — starts by itself when you arrive, even with the screen off