Botryodial Smithsonite - Buena Tierra Mine, Mexico

Contributed by: FMS Admin
Date: May 4th, 2026
Locality: Buena Tierra Mine, Francisco Portillo, West Camp, Santa Eulalia Mining District, Aquiles Serdán Municipality, Chihuahua, Mexico (See on Mindat)
Size: 3 x 2 x 4 inches

Description:
This is the first fluorescent rock I bought in 2014 and got me hooked.

Originally posted by UV Studio on Nature's Rainbows in 2016.

Fluorescence under shortwave UV light.

Fluorescence under longwave UV light.

Normal light.

Summary of luminescence responses:

Smithsonite (Mindat) (RRUFF)

• Fluorescence under Longwave (365nm LED) UV light: Red
• Fluorescence under Shortwave (254nm Lamp/Mercury) UV light: Pink
• Fluorescence under Shortwave (254nm Lamp/Mercury) UV light: Blue