SULFUR crystals with fluorescent GYPSUM - El Desierto Mine, Potosi, Bolivia
Yellow crystals of native Sulfur (Sulphur) on light colored Alum-K matrix. There is a very weak green fluorescence coming from a few small spots (Gypsum).
Measures approximately 4 x 4 x 2.5 inch, 1 lb 3.96 oz / 102 x 102 x 63 mm, 566g
Price: 30.00 USD
Item # A0861213
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).