Hackmanite, Cryolite, and Feldspar - Kola Peninsula, Russia
Contributed by: FMS Admin
Date: May 8th, 2026
Locality: Alluaiv Mountain, Lovozersky District, Murmansk Oblast, Russia (See on Mindat)
Size: 2 x 3 inches
Description:
Some think this piece looks like a cross between Nemo and Dory, regardless, it is interesting and allegedly relatively rare. It is hackmanite, cryolite, and feldspar from Alluaiv Mountain, in the Lovozero Massif on the Kola Peninsula in Russia. The hackmanite is very bright in longwave, mildly bright in shortwave, with a slight tenebrescence (not shown). The cryolite is baby blue in shortwave, while the feldspar is dull, deep red in shortwave.
Originally posted by Fire Viper on Nature's Rainbows in 2018.
Summary of luminescence responses:
Cryolite (Mindat) (RRUFF)
- Fluorescence under Shortwave (254nm Lamp/Mercury) UV light: Blue
- Fluorescence under Shortwave (254nm Lamp/Mercury) UV light: Red
- Fluorescence under Longwave (365nm LED) UV light: Orange
- Fluorescence under Shortwave (254nm Lamp/Mercury) UV light: Red
- Fluorescence under Midwave (305nm Lamp/Mercury) UV light: Orange