Willemite, Balmat, New York
Light grey, translucent crystals of willemite on and in a light grey matrix, from Balmat, St. Lawrence Co., New York. The willemite fluoresces bright green under short wave UV with bright and lasting green phosphorescence. The size of this specimen is 66.3 x 46.5 x 28.4 mm, and it weighs 130 grams.
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