Fluorescent Mineral Database

Sphalerite, Microcline - Taylor Road, Franklin, New Jersey

Contributed by: FMS Admin
Date: May 9th, 2026
Locality: Taylor Road dumps, Franklin Mine, Franklin, Sussex County, New Jersey, USA (See on Mindat)

Description:
Sphalerite and microcline from the Taylor Road site in Franklin, New Jersey is quite beautiful stuff. There may even be a smidge of chlorophane in this piece as well. The matrix is extremely hard, and the material is very difficult to break apart. However, the work is worth the reward. This one is a small piece off of a bigger rock but has great coverage. The sphalerite is pink; the microcline is blue and the chlorophane is the tiny speck of teal.

Originally posted by Fire Viper on Nature's Rainbows in 2017.

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:

Microcline (Mindat) (RRUFF)

  • Fluorescence under Longwave (365nm LED) UV light: Blue
  • Fluorescence under Shortwave (254nm Lamp/Mercury) UV light: Blue
Sphalerite (Mindat) (RRUFF)
  • Fluorescence under Longwave (365nm LED) UV light: Pink