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SC295 - Willemite, Franklinite (TL), Zincite (TL)

Locality: Franklin Mine, Franklin, Franklin Mining District, Sussex County, New Jersey, USA (MINDAT)
Size: 8 x 4 x 4 cm - Cabinet (6-10 cm)
Weight: 145 g
minID: 1E7-XQC

Nicely crystallized, greenish willemite with black franklinite and red zincite. The green fluorescence of the willemite is extremely intense. It is also “daylight fluorescent”: if outside in a sunny day in the shadow the UV light from the sun is enough to make the sample more green than under artificial light.

Photo in normal light.
Fluorescence under longwave UV light (365nm LED).
Last update: 30 December 2020