DescriptionDOLOMITE AND CALCITE - AN UNUSUAL BI-COLORED FRANKLIN FLUORESCENT Sterling Hill, Sussex Co, New Jersey
When first discovered, this shortwave UV fluorescent material was thought to be two different generations of the same mineral: Calcite. One, fluorescing a bright, deep red and the other showing more intensely fluorescing, red-orange spots. It therefore acquired the nickname "Crazy Calcite". Eventually however, in the 1970s, a Franklin collector had the material tested, and to everyone's surprise, the deep red fluorescing material turned out to be Dolomite, while the red-orange fluorescent was indeed Calcite, thereby clearing up the mystery. Such specimens are found in both Franklin proper and at Sterling Hill, the latter being the source of this particular example, 5½ x 3½ x 2½ inches (14 x 8.9 x 6.4 cm), vividly dotted with non-fluorescent black Franklinite. It is fairly scarce from either locale. Offered at no reserve.
Provenance: ex. Hugh Ronemus Collection
Condition report available upon request.
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