Fluorescent Xonotlite crystals, roeblingite, clinohedrite under shortwave UV light.

Xonotlite crystals (violet, gray), roeblingite (red), amethystine clinohedrite (yellow), feldspar (maroon) and very minor willemite (green) from Franklin, NJ under shortwave UV light. Photo by Robert A. Boymistruk.
Fluorescent Xonotlite crystals, roeblingite, clinohedrite under shortwave UV light.

Fluorescent Xonotlite crystals, roeblingite, clinohedrite under shortwave UV light.

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