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SC354 - Idrialite


Locality: Culver-Baer Mine, North Fork Little Sulphur Creek, Cloverdale, West Mayacmas Mining District, Sonoma Co., California, USA (MINDAT)
Size: 6 x 4 x 3 cm - Small cabinet (5-7 cm)
Weight: 85 g
minID: TYJ-RMM

Idrialite (yellow, fluorescent green), cinnabar (red, non fluorescent), aragonite (white, fluorescent white), and quartz (white, non fluorescent). The idrialite is mostly included/covered by the quartz. The idrialite fluoresces green, but on the back there is a small patch with a more bluish fluorescence (hard to see in the photo).

Photo in normal light.
Fluorescence under longwave UV light (365nm LED).
Photo in normal light.
Fluorescence under longwave UV light (365nm LED).
Fluorescence spectra of the green idrialite and the bluish patch. Same spectra are obtained from shortwave and longwave UV light.
Last update: 23 March 2021