Dims:0.6x0.5x0.3" (1.5x1.3x0.8 cm)
Wt: 0.04oz. (1.1g)
This small thumbnail specimen consists of tiny (nearly microscopic) crystals of the mineral schrockingerite on matrix. Under a loupe, tiny crystal faces may be seen, but no details of the triclinic form can be distinguished. This specimen fluoresces a bright yellow-green under both short and long wave ultraviolet light-an indicator of uranium. This specimen shows no damage. Schrockingerite is named for the Austrian geologist J. von Schrockinger.