Prehnite from Imilchil, Morocco

Contributed by: Simone Conti
minID: 9UL-DGG
Date: Dec 4th, 2024
Locality: Imilchil, Imilchil Caïdat, Imilchil Cercle, Midelt Province, Drâa-Tafilalet Region, Morocco (See on Mindat)
Size: 5 x 4 x 7 cm
Weight: 201 g

Description:
A very nice rosette of light green prehnite crystals surrounded by quartz. Looks like a flower! Under longwave UV light the prehnite fluoresces a dim light blue. Not an impressive fluorescence, but quite interesting.

Normal light.

Fluorescence under longwave UV light.

Summary of luminescence responses:

Prehnite (Mindat) (RRUFF)

• Fluorescence under Longwave (365nm LED) UV light: Blue