This is a very peculiar and interesting specimen of aragonite dripstone, collected in an unnamed cave in a limestone quarry in Shoals, Indiana. This brain-like, convoluted formation of off-white aragonite fluoresces blue/white under all UV wavelengths, with blue phosphorescence after short wave and green phosphorescence after long wave UV. The size of this unique specimen is 38 x 34 x 30 mm.
