Superman's Greatest Nemisis: Kryptonite!
Contributed by: Chris Clemens
minID: 1HX-YA2
Date: Apr 25th, 2026
Locality: Lord Hill Quarry (Lord Hill Mine), Stoneham, Oxford County, Maine, USA (See on Mindat)
Size: 46 x 21 x 60 mm
Weight: 56 g
Description:
Actually, this is a very unusual specimen consisting of brightly fluorescent hyalite opal (Opal-AN) on translucent quartz, from the Lord Hill Quarry, Stoneham, Oxford Co., Maine. The hyalite fluoresces bright green under shortwave UV, and the translucent quartz picks up the green fluorescence, causing the quartz matrix to appear to glow from within. The hyalite is only dimly fluorescent under longwave UV.
Originally posted by Chris Clemens on Nature's Rainbows in 2016.
Summary of luminescence responses:
Opal-AN (Mindat) (RRUFF)
- Fluorescence under Shortwave (254nm Lamp/Mercury) UV light: Green