Margarosanite - solid platy masses, Franklin, New Jersey

Contributed by: Mark Cole
Date: Mar 31st, 2026
Locality: Franklin Mine, Franklin, Sussex County, New Jersey, USA (See on Mindat)

Description:
Originally posted by Mark Cole on Nature's Rainbows in 2016.

Fluorescence under shortwave UV light.

Summary of luminescence responses:

Margarosanite (Mindat) (RRUFF)

• Fluorescence under Shortwave (254nm Lamp/Mercury) UV light: Blue