Calcite, Aragonite - Helvetia, Arizona
Contributed by: FMS Admin
Date: May 3rd, 2026
Locality: Helvetia, Helvetia-Rosemont Mining District, Pima County, Arizona, USA (See on Mindat)
Size: 3 x 2 x 5 inches
Weight: 18 oz
Description:
A prime fluorescent example from this newly discovered location in Arizona located in the Santa Rita Mountains! The UV photo is shortwave using a 60mm macro lens at F32 ISO 100. Quite fascinating!
Originally posted by UV Studio on Nature's Rainbows in 2017.
Summary of luminescence responses:
Aragonite (Mindat) (RRUFF)
- Fluorescence under Shortwave (254nm Lamp/Mercury) UV light: Blue
- Fluorescence under Shortwave (254nm Lamp/Mercury) UV light: Red

