This week's glowblog entry is a creamy brown piece of fluorite from Ohio. Activated by long-wave ultraviolet light, this piece stands in contrast to the more brightly colored blue fluorite, such as what may be found in England. It's also interesting in that Ohio and Kentucky do produce large amounts of fluorite, in the form of large, dramatic crystals, but most of it doesn't glow. We obtained this 2" specimen at the '96 Tucson Mineral Show.