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!

Wickenburgite, Willemite, Fluorite - Potter Cramer Mine, Arizona

Contributed by: Mark Cole
Date: Mar 18th, 2026
Locality: Potter-Cramer Mine, Vulture Mining District, Maricopa County, Arizona, USA (See on Mindat)

Description:
Named after its discovery locality, the Potter-Cramer claim, near Wickenburg, Arizona, USA. One knowledgeable contributor commented: "This does not look like any Wickenburgite specimen I have ever seen. Looks more like Calcite from Hogan Claim in Arizona" - we will look for another specimen to check the validity.

Originally posted by Mark Cole on Nature's Rainbows in 2015.

Fluorescence under shortwave UV light.
Fluorescence under shortwave UV light.

Summary of luminescence responses:

Wickenburgite (Mindat) (RRUFF)

  • Fluorescence under Shortwave (254nm Lamp/Mercury) UV light: Red
Fluorite (Mindat) (RRUFF)
  • Fluorescence under Shortwave (254nm Lamp/Mercury) UV light: Blue
  • Fluorescence under Longwave (365nm LED) UV light: Blue
Willemite (Mindat) (RRUFF)
  • Fluorescence under Shortwave (254nm Lamp/Mercury) UV light: Green

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