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 - Moscona Mine, Spain

Contributed by: Daniel C. Montero
Date: May 6th, 2026
Locality: Moscona Mine, El Pontón de Solís, Corvera de Asturias, Asturias, Spain (See on Mindat)
Size: 12 x 18 cm

Description:
Scalenohedral calcite with inclusions of pyrite and rare sand coating possible response with a nice orange color combined with rosacea offer their best response under MW.

These rare sands are common to find under many of the samples of fluorite, being the cause of an orange response in them and at other times appear as an outer coating as in the sample of these photos.

Originally posted by Daniel C Montero on Nature's Rainbows in 2018.

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

Summary of luminescence responses:

Calcite (Mindat) (RRUFF)

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

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