This is a cut quartzite slab containing veins of scheelite with minor mica schist. From the Wolfram Bergbau und Hütten AG Mine, scheelite deposit, 7 km south of Mittersill, Salzburg, Austria. Under short wave UV, the parallel scheelite veins fluoresce bright sky blue. The quartzite and mica schist are not fluorescent. The size of this specimen is 15.5 x 11.0 x 1.4 cm, and it weighs 382 grams.
Under short wave UV (254 nm) the scheelite fluoresces bright blue/white.
Same specimen shown under visible light.