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!

Cinnabar and Idrialite from the Culver-Baer Mine, California, USA

Contributed by: Simone Conti
minID: QJP-P2C
Date: Dec 04th, 2024
Locality: Culver-Baer Mine, North Fork Little Sulphur Creek, Cloverdale, West Mayacmas Mining District, Sonoma County, California, USA (See on Mindat)
Size: 9 x 7 x 8 cm
Weight: 565 g

Description:
A very rich piece of yellow idrialite and red cinnabar. Some nice little crystals are visible with a druzy quartz (?) coating. The idrialite fluoresces very bright green under any UV light. The fluorescence photo was taken with a little bit of daylight too. Not sure yet if it is a better daylight or fluorescence specimen!

Normal light.
Normal light.
Fluorescence under longwave UV light (with a bit of white light).
Fluorescence under longwave UV light (with a bit of white light).

Summary of luminescence responses:

Idrialite

  • Fluorescence under Longwave (365nm LED) UV light: Green
  • Fluorescence under Midwave (305nm LED) UV light: Green
  • Fluorescence under Shortwave (254nm Lamp/Mercury) UV light: Green

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