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!

Calcite and Fluorite with Phantoms - Yaogangxian, China

Contributed by: FMS Admin
Date: May 9th, 2026
Locality: Yaogangxian Mine, Yaogangxian W-Sn ore field, Yizhang Co., Chenzhou, Hunan, China (See on Mindat)
Size: 4 x 6 inches
Weight: 2 lb

Description:
From Yaogangxian, Hunan, China, clear calcite cubes sitting on a bed of green fluorite. Under shortwave, the calcite shows small phantoms in some of the cubes. Interestingly, they are not there in midwave. Not incredibly bright under longwave, displaying a faint purple hue, which may be a combination of calcite and reflection. Under shortwave, there is a bit of bright blue on the bottom. No idea what it could be.

Originally posted by Fire Viper 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.
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
  • Fluorescence under Midwave (305nm LED) UV light: Red
  • Fluorescence under Longwave (365nm LED) UV light: Violet

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