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!

Walstromite - Esquire No.8, Big Creek, Fresno Co., California

Contributed by: Mark Cole
Date: Apr 2nd, 2026
Locality: Esquire No. 8 claim, Big Creek, Big Creek-Rush Creek Mining District, Fresno County, California, USA (See on Mindat)

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

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

Summary of luminescence responses:

Walstromite (Mindat) (RRUFF)

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

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