Hackmanite (Sodalite) on Richterite, Afghanistan - a detailed study

Contributed by: Mark Cole
Date: Mar 18th, 2026
Locality: Sar-e-Sang, Kuran wa Munjan District, Badakhshan, Afghanistan (See on Mindat)

Description:
This material is very tenebrescent and very phosphorescent. It takes a while to fade (put under very bright white light). Also present is richterite (varying fluorescence), as well as yellow fluorescing phlogopite (SW).

Originally posted by Mark Cole on Nature's Rainbows in 2015.

Fluorescence under shortwave UV light.

Afterglow after exposure to shortwave UV light.

Fluorescence under midwave UV light.

Fluorescence under longwave UV light.

Tenebrescence after exposure to longwave UV light.

Tenebrescence after exposure to shortwave UV light.

Normal light.

Normal light. Specimen size image

Summary of luminescence responses:

Hackmanite (Mindat) (RRUFF)

• Fluorescence under Longwave (365nm LED) UV light: Orange
• Fluorescence under Midwave (305nm Lamp/Mercury) UV light: Pink
• Fluorescence under Shortwave (254nm Lamp/Mercury) UV light: Pink
• Afterglow after exposure to Shortwave (254nm Lamp/Mercury) UV light: White
• Tenebrescence after exposure to Longwave (365nm LED) UV light: Purple
• Tenebrescence after exposure to Shortwave (254nm Lamp/Mercury) UV light: Purple

• Fluorescence under Shortwave (254nm Lamp/Mercury) UV light: Yellow

• Fluorescence under Shortwave (254nm Lamp/Mercury) UV light: Yellow