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SC311 - Zircon

Locality: Malawi (MINDAT)
Size: 6 x 5 x 5 cm - Small cabinet (5-7 cm)
Weight: 250 g
minID: 2LA-KJT

“Elephant” zircon from Malawi. The crystal is huge! Best fluorescence under shortwave UV light. The fluorescence spectrum shows a broad peak centered at 580nm due to radiation induced centers.

Photo in normal light.
Fluorescence under shortwave UV light (254nm Hg light).
Fluorescence spectrum under 275nm UVC LED. The broad peak at about 580nm is due to radiation centers. The more radiation damage there is, the more the peak shifts towards the red.
Last update: 29 December 2020