Fluorescent Mineral Database

A new secret project! Trying to create a nice Fluorescent Mineral Database (FMDB), which would be searchable by mineral, locality, and luminescence properties. Also making it easy for people to contribute with their own specimens!

Radiating Tremolite with Caliche - Sunset South Mine, Maricopa County, Arizona

Contributed by: FMS Admin
Date: Feb 25th, 2026
Locality: Sunset South Mine, Maricopa County, Arizona, USA (See on Mindat)
Size: 3 x 1.5 x 4 inches
Weight: 10.625 oz

Description:
RADIATING TREMOLITE WITH CALICHE FROM THE SUNSET SOUTH MINE, MARICOPA COUNTY, AZ.
Caliche on the first side but not on the 2nd side.

Fluorescent pictures were taken at ISO-100, f/11 for 1.3 seconds.

Originally posted by John Rofrano on Nature's Rainbows.

Fluorescence under shortwave UV light.
Fluorescence under shortwave UV light.
Fluorescence under shortwave UV light. Side 2
Fluorescence under shortwave UV light. Side 2
Normal light.
Normal light.

Summary of luminescence responses:

Caliche (Mindat) (RRUFF)

  • Fluorescence under Shortwave (254nm Lamp/Mercury) UV light: Orange
Tremolite (Mindat) (RRUFF)
  • Fluorescence under Shortwave (254nm Lamp/Mercury) UV light: Blue

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