Calcite on Fluorite - Moscona Mine, Spain
Contributed by: Daniel C. Montero
Date: May 4th, 2026
Locality: Moscona Mine, El Pontón de Solís, Corvera de Asturias, Asturias, Spain (See on Mindat)
Size: 11 x 14 cm
Description:
Moscona Mine, located in El Pontón de Solís region, town of Corvera de Asturias, in Spain. The fluorite in this location appears in the form of large clusters of cubic crystals, of a honey yellow color, generally smaller than 2 cm, transparent and bright in some cases like this one with a very nice zoned white fluorescence. It is commonly associated with large calcite crystals, forming very aesthetic specimens with great contrast.
The fluorite crystals are up to 2.2 cm and they are quite unusual on which there is a large, very aerial scalenohedral calcite crystal.
Fluorite fluoresces under any wavelength and calcite only under the medium wave which is without a doubt the best answer for this piece.
Originally posted by Daniel C Montero on Nature's Rainbows in 2023.
Summary of luminescence responses:
Calcite (Mindat) (RRUFF)
- Fluorescence under Midwave (305nm Lamp/Mercury) UV light: Pink
- Fluorescence under Longwave (365nm LED) UV light: White
- Fluorescence under Midwave (305nm Lamp/Mercury) UV light: White
- Fluorescence under Shortwave (254nm Lamp/Mercury) UV light: White