Fluorite and strontianite on limestone, City of Huntsville, Madison Co, AL
Contributed by: FMS Admin
Date: Mar 1st, 2026
Locality: Huntsville, Madison County, Alabama, USA (See on Mindat)
Size: 5 x 3 x 8 cm
Weight: 144 g
Description:
From a now-closed construction site in Huntsville, this piece of limestone contains an amber-colored fluorite that fluoresces an attractive yellow-white color and strontianite that fluoresces in bluish-white. Both minerals fluoresce about equally well under either LW or SW UV, and both are moderately phosphorescent, especially under SW UV. The views under SW UV and under room light are presented here. This specimen also displays some purple fluorite, whose fluorescence is seen to be much weaker than that of the amber fluorite.
Originally published by Bill Fowler on Nature’s Rainbows.
Summary of luminescence responses:
Strontianite (Mindat) (RRUFF)
- Fluorescence under Longwave (365nm LED) UV light: White