Travertine or flowstone (calcite), Madison County, AL, I-565 road cut
Contributed by: FMS Admin
Date: Mar 1st, 2026
Locality: Madison County, Alabama, USA (See on Mindat)
Size: 7 x 3 x 8 cm
Weight: 194 g
Description:
Fluorescent travertine is common all over northern and central Alabama, but much of it is only modestly bright in UV light. Hence, I often don\'t even bother to collect it when I find it. This piece, however, is exceptionally bright and clean. Like many of Alabama\'s fluorescents, it does about equally well under either LW or SW UV, and it also phosphoresces under both wavelengths. Shown here are the SW UV fluorescence and the room-light appearance of the specimen.
Originally published by Bill Fowler on Nature’s Rainbows.
Summary of luminescence responses:
Travertine (Mindat) (RRUFF)
- Fluorescence under Longwave (365nm LED) UV light: Blue