Fluorescent Aragonite from Mexico

Contributed by: FMS Admin
minID: 0W9-750
Date: May 13th, 2026
Locality: Santa Eulalia Mining District, Aquiles Serdán Municipality, Chihuahua, Mexico (See on Mindat)
Size: 8 x 5.4 x 10.4 cm

Description:
Very nice, large cabinet-sized specimen of stalactitic aragonite (aka "Cave aragonite"), from the Santa Eulalia Mining District, fluorescing under shortwave UV. Shown in visible light in the second picture, then the opposite side of the specimen is shown under shortwave UV and in visible light.

Originally posted by Frédéric Messier Leroux on Nature's Rainbows in 2022.

Fluorescence under shortwave UV light.

Normal light.

Fluorescence under shortwave UV light. Side 2

Normal light. Side 2.

Summary of luminescence responses:

Aragonite (Mindat) (RRUFF)

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