Deep Blue Fluorescent Fluorite - William Wise Mine, Westmoreland, New Hampshire

Contributed by: Chris Clemens
minID: 7C0-LP3
Date: May 20th, 2026
Locality: William Wise Mine, Westmoreland, Cheshire County, New Hampshire, USA (See on Mindat)
Size: 8 x 3.3 x 8.6 cm
Weight: 274 g

Description:
Green octahedral fluorite crystals on a mixed matrix of colorless calcite and fluorite, from the William Wise Mine, Westmoreland, Cheshire County, New Hampshire. The fluorite fluoresces deep blue under shortwave UV, and brighter, very pure blue under longwave UV.

Originally posted by Chris Clemens on Nature's Rainbows in 2016.

Fluorescence under longwave UV light.

Normal light.

Summary of luminescence responses:

Fluorite (Mindat) (RRUFF)

• Fluorescence under Longwave (365nm Lamp/Mercury) UV light: Blue