Quartz with Fluorescent Hydrocarbon Inclusions - Grant Quarry near Greely, Ontario, Canada
Contributed by: FMS Admin
minID: K41-HN8
Date: May 16th, 2026
Locality: Grant Quarry (Ottawa; Miller; Beaver Asphalt), Gloucester Township, Ottawa, Ontario, Canada (See on Mindat)
Size: 2 x 1.3 x 2.1 cm
Description:
While not being spectacularly bright, this specimen is still interesting because fluorescent inclusions in quartz crystals from Canadian locales are rarely heard-of. In fact, I think this specimen is currently the only one from this locale having been posted online; more will probably surface eventually, since many Canadian collectors have specimens from this now inaccessible locale in their collections. This specimen was part of a lot I obtained in a trade with a friend of mine. Its fluorescence is at its best under longwave UV; the specimen is also quite pretty in visible light.
Originally posted by Frédéric Messier Leroux on Nature's Rainbows in 2021.
Summary of luminescence responses:
Quartz (Mindat) (RRUFF)
- Fluorescence under Longwave (365nm LED) UV light: White