fluorescent WELOGANITE crystals - type locality - Francon quarry, Quebec, Canada
Rare light tan Weloganite crystals, fluorescent in SW and LW UV.
from Francon quarry, Montréal, Québec, Canada - Weloganite type locality
it's six locations world-wide for Weloganite: five in Canada, one in South Africa; this location is type locality, it is closed to collecting - it's now a trash site of city of Montréal
Measures approximately 1 x 0.75 x 0.50 inch / 25 x 19 x 13 mm,
total weight in plastic display box: 0.45 oz / 13g
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).