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!

Fluorite, Calcite, Willemite, Caliche - Hogan Claim, Arizona

Contributed by: FMS Admin
Date: May 4th, 2026
Locality: Great Southern Mine, Monarch Wash area, Black Rock Mining District, Yavapai County, Arizona, USA (See on Mindat)
Size: 7 inches

Description:
This is a spectacular extra-large specimen from the Hogan Claim in Arizona. Because of their brightness, these specimens are a photographic challenge. Photographed with a 50mm lens, ISO 100, F22. The white balances are as follows; Natural = 5k, LW = 7K, SW = 10k.

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

Fluorescence under longwave and shortwave UV light.
Fluorescence under longwave and shortwave UV light.
Fluorescence under shortwave UV light.
Fluorescence under shortwave UV light.
Fluorescence under longwave UV light.
Fluorescence under longwave UV light.
Normal light.
Normal light.

Summary of luminescence responses:

Calcite (Mindat) (RRUFF)

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

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