Calcite and Fluorite, with Pyrite - El Hammam Mine, Morocco

Contributed by: Mark Cole
Date: Apr 9th, 2026
Locality: El Hammam Mine, El Hammam, Ait Mimoune Caïdat, Khémisset Cercle, Khémisset Province, Rabat-Salé-Kénitra Region, Morocco (See on Mindat)
Size: 4 x 2.5 x 4 inches
Weight: 1.9 lb

Description:
Originally posted by Mark Cole on Nature's Rainbows in 2017.

Fluorescence under midwave UV light.

Fluorescence under shortwave UV light.

Fluorescence under longwave UV light.

Normal light.

Normal light. Closeup

Summary of luminescence responses:

Calcite (Mindat) (RRUFF)

• Fluorescence under Midwave (305nm Lamp/Mercury) UV light: Red
• Fluorescence under Shortwave (254nm Lamp/Mercury) UV light: Red

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