ASTROPHYLLITE and SODALITE - Mont Saint-Hilaire, Quebec, Canada - ex G.Grenier
Astrophyllite "needles", dark green-black prismatic Aegirine crystals, Albite Feldspar - magenta fluorescent in short wave UV, and Sodalite - fluorescent orange LW and weak dark red-orange SW.
ex William Gary Grenier (1950-2004)
from Poudrette quarry (Demix quarry; Uni-Mix quarry; Desourdy quarry; Carrière Mont Saint-Hilaire; MSH), Mont Saint-Hilaire, La Vallée-du-Richelieu RCM, Montérégie, Québec, Canada
at this locality, in 2017 , "collecting is restricted to one or two field trips per year, to small groups (drawn by lottery) of members of the Club de Minéralogie de Montréal, under very strict rules" (mindat.org)
Measures approximately 2 x 1.5 x 1 inch, 2.99 oz (weighed with box) / 51 x 38 x 25 mm, 85g
Price: 300.00 USD
Item # A1320314
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).