• Frédéric Messier Leroux

Hackmanite, feldspar, astrophyllite, etc, from Mont Saint-Hilaire, Quebec, Canada

Shown in the slideshow below is a nice combination piece consisting mostly of brightly fluorescing hackmanite, with some SW fluorescing feldspar (not really impressive - typical dull red SW response of feldspar), plus some unidentified brown mineral with a green SW response. The tenebrescence of this hackmanite specimen is quite mediocre, compared to average hackmanite specimens from MSH; however, some non-fluorescent radiating astrophyllite gives some extra beauty to the specimen in visible light. The shortwave fluorescence of this specimen is a bit brighter than usual; MSH hackmanite is usually quite dim under SW, even before the tenebrescence sets in. Its brighter than usual SW response is most likely due to the fact that most of this specimen is not tenebrescent.


Shown respectively in the slideshow: longwave, midwave and shortwave UV fluorescence, tenebrescence, then natural color.


Specimen collected in 2018.


Size: 14,5 cm X 12,9 cm X 8,6 cm







53 views0 comments

Email comments or suggestions:

Home

Nature’s Rainbows is a non-commercial web site maintained entirely by volunteer hobbyists and contributors.  Our mission is to provide information about UV and luminescence, premium fluorescent mineral photos, and a fluorescent mineral database for the enjoyment of FL mineral collectors around the world.  Information on this web site is covered under a Creative Commons License.


Feel free to contact us with comments and suggestions.

Like us on Facebook!

  • reddit
  • Facebook Social Icon

Subscribe to our RSS (Real Simple Syndication) feed to get new posts delivered directly to your desktop!