Fluorescent Mineral Database

A new secret project! Trying to create a nice Fluorescent Mineral Database (FMDB), which would be searchable by mineral, locality, and luminescence properties. Also making it easy for people to contribute with their own specimens!

Sodalite (Hackmanite) and Richterite from Afghanistan

Contributed by: Mark Cole
Date: Mar 14th, 2026
Locality: Sar-e-Sang, Kuran wa Munjan District, Badakhshan, Afghanistan (See on Mindat)
Size: 3.5 x 2.5 x 5 inches
Weight: 1.5 lb

Description:
How about you grab your UV light, hop on a plane and head out to the mines in the remote mountains of Afghanistan. I guarantee you will discover a new "world-class" deposit of fluorescent minerals. Send us a postcard...
By now everyone is familiar with the sodalite (hackmanite) from Afghanistan; very tenebrescent, often phosphorescent, and sometimes nice crystals. This piece is a large crystal which has been wrapped by richterite. The richterite is what I find amazing here: under longwave it exhibits a beautiful greenish/blue fluorescence. Not all richterite does this – that is why we need you to hop on a plane and find the ones that do. There just are not that many two-color longwave specimens around.

The sodalite is nicely tenebrescent but not as dark as others, and it fades rapidly. It is also somewhat phosphorescent.

Originally posted by Mark Cole on Nature's Rainbows in 2016.

Fluorescence under longwave UV light.
Fluorescence under longwave UV light.
Fluorescence under shortwave UV light.
Fluorescence under shortwave UV light.
Afterglow after exposure to shortwave UV light.
Afterglow after exposure to shortwave UV light.
Tenebrescence after exposure to shortwave UV light.
Tenebrescence after exposure to shortwave UV light.
Normal light.
Normal light.

Summary of luminescence responses:

Hackmanite (Mindat) (RRUFF)

  • Fluorescence under Longwave (365nm LED) UV light: Orange
  • Fluorescence under Shortwave (254nm Lamp/Mercury) UV light: Pink
  • Afterglow after exposure to Shortwave (254nm Lamp/Mercury) UV light: White
  • Tenebrescence after exposure to Shortwave (254nm Lamp/Mercury) UV light: Purple
Richterite (Mindat) (RRUFF)
  • Fluorescence under Longwave (365nm LED) UV light: White
  • Fluorescence under Shortwave (254nm Lamp/Mercury) UV light: Yellow