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!

Spinel, Clinohumite in Marble - Sierra de Mijas, Malaga, Spain

Contributed by: Daniel C. Montero
Date: May 6th, 2026
Locality: Sierra de Mijas, Mijas, Málaga, Andalusia, Spain (See on Mindat)

Description:
Spinel and clinohumite micro crystals on a marble matrix from Sierra de Mijas, Málaga, Andalusia, Spain.
It is a difficult material to find because it appears in scattered outcrops throughout Sierra de Mijas, Mijas, Málaga, Andalusia, Spain, so you must walk a lot to find areas that have not already been hunted by one of the many local collectors and merchants.

Originally posted by Daniel C Montero on Nature's Rainbows in 2021.

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:

Clinohedrite (Mindat) (RRUFF)

  • Fluorescence under Shortwave (254nm Lamp/Mercury) UV light: Yellow
Spinel (Mindat) (RRUFF)
  • Fluorescence under Longwave (365nm LED) UV light: Red

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