fluorescent phosphorescent GYPSUM SELENITE - Red River floodway, Manitoba, Canada
Selenite Gypsum crystals, fluorescent white SW and LW, with short lived phosphorescence after UV irradiation.
Measures approximately 2 x 2 x 1 inch, 3.66 oz / 51 x 51 x 25 mm, 104g
Item # A1041018#9
To show the fluorescent response the specimen was illuminated using 6 watt 254nm (Short Wave) / 366nm (Long Wave) UVGL-58 lamp (you need a proper UV light source to observe the fluorescence, more powerful lamp = brighter response).