Wernerite- A Spectacular Long Wave Mineral

Wernerite is a member of the scapolite family, intermediate between Meionite and Marialite. Its interest to fluorescent mineral collectors is that it is brightly fluorescent under long wave UV, as most fluorescent minerals respond best under short wave. This specimen is from the Lady Smith Mine, near Otter Lake, Quebec, Canada. Under long wave UV it shows a very bright yellow fluorescent response. The fluorescence is similar, but dimmer, under short wave UV. The size of this piece is 13 x 13 x 5 cm.

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