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SC416 - Gypsum var Golden Selenite

Locality: Lily Mine (Lilly Mine), Pisco Umay, Ica, Peru (MINDAT)
Size: 12 x 6 x 9 cm - Large cabinet (10-15 cm)
Weight: 310 g
minID: 8WF-D93

Golden, translucent gypsum crystal (var selenite) with bright greenish white fluorescence under UV light, and marked yellowish phosphorescence/afterglow. Very nice under either normal light or UV. The main crystal is 4x3x1cm.

Left: Fluorescence under 254nm UVC (shortwave) Hg light. Right: normal light.
Left: Fluorescence under 365nm UVA (longwave) LED. Right: normal light.
Left: Phosphorescence/Afterglow after exposure to 365nm UVA (longwave) LED. Right: normal light.
Fluorescence spectrum under 365nm UVA (longwave) LED excitation.
Last update: 04 December 2021