Hureaulite, Jahnsite, Mitridatite
Tip Top Mine (Tip Top pegmatite), Fourmile, Custer District, Custer Co., South Dakota, USA
Small Cabinet, 5.4 x 4.5 x 4.0 cm
A rich specimen composed of sharp, large pink hureaulite crystals to 1 cm on matrix of other phosphates. The hureaulite is better in person, and superb for the locale. The matrix (mostly rockbridgeite) is rich with sparkling black jahnsite and tiny mitridatite crystals, as well.