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!

Scheelite Crystal on Calcite – Inner Mongolia

Contributed by: Mark Cole
Date: Mar 19th, 2026
Locality: Huanggang Fe-Sn deposit, Hexigten Banner (Keshiketeng Co.), Chifeng City (Ulanhad League; Chifeng Prefecture), Inner Mongolia, China (See on Mindat)
Size: 7 inches

Description:
This is one of the most striking specimens from the Huanggang Mines in Inner Mongolia of this material. The calcite offers a dramatic backdrop for the mottled blue/yellow/white scheelite crystal.

Originally posted by Mark Cole on Nature's Rainbows in 2016.

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

Summary of luminescence responses:

Calcite (Mindat) (RRUFF)

  • Fluorescence under Shortwave (254nm Lamp/Mercury) UV light: Red
  • Fluorescence under Midwave (305nm Lamp/Mercury) UV light: Red
Scheelite (Mindat) (RRUFF)
  • Fluorescence under Shortwave (255nm LED) UV light: Yellow
  • Fluorescence under Midwave (305nm Lamp/Mercury) UV light: Yellow
  • Fluorescence under Shortwave (254nm Lamp/Mercury) UV light: Blue

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