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!

Plumbogummite after Pyromorphite - Yangshuo Mine, Guilin Prefecture, Guangxi Zhuang A. R., China

Contributed by: Mark Cole
Date: Apr 9th, 2026
Locality: Yangshuo Mine, Yangshuo Co., Guilin, Guangxi, China (See on Mindat)
Size: 2 x 1.5 x 2 inches
Weight: 3.7 oz

Description:
These pieces are found in a hydrothermal lead-zinc deposit, hosted in limestone and sandstone, with granite intrusions. Two mines operate in the area and there might be some confusion about the exact mine - the Daoping and Yangshuo mines, connected underground. Plumbogummite is a rare secondary lead phosphate mineral coating bright yellow pyromorphite crystals.

Exceptional color under midwave (MW) UV, duller under SW, with no response LW. This is one of the few fluorescent mineral specimens that is absolutely best under MW.

Originally posted by Mark Cole on Nature's Rainbows in 2018.

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

Summary of luminescence responses:

Pyromorphite (Mindat) (RRUFF)

  • Fluorescence under Midwave (305nm Lamp/Mercury) UV light: Yellow
Plumbogummite (Mindat) (RRUFF)
  • Fluorescence under Midwave (305nm Lamp/Mercury) UV light: Green
  • Fluorescence under Shortwave (254nm Lamp/Mercury) UV light: Green

FMDB Home Page
Submit a new specimen!
My Collection