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Terlingua-Type Calcite, Cave Stone Co. Quarry, Norristown, Indiana

23.6.2016

Pink to white cleavage rhombs of Terlingua-type calcite on a limestone matrix, from the Cave Stone Co. Quarry, Norristown, Indiana.  This calcite is described in Manual Robbins' book ("Fluorescence, Gems and Minerals Under Ultraviolet Light," 1994, p. 77) for its classic Terlingua-type fluorescence.  This specimen shows the classic Terlingua-type bright blue fluorescence with lasting phosphorescence under SW UV, and a bright pink response under LW UV.  This is a beautiful fluorescent specimen from an uncommon Midwestern location.  112 x 58 x 54 mm, 369 gms.

 

 

 

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