Flourescent and phosphorescent CALCITE with Robertson Pit, near Dayton, Mason County, Washington, USA Specimen is 6.9 x 4.3 x 4.0 cm (2.7 x 1.7 x 1.6 in) Photo Copyright © 2014 Jeffrey M. Schwartz
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Flourescent and phosphorescent CALCITE with Robertson Pit, near Dayton, Mason County, Washington, USA Specimen is 6.9 x 4.3 x 4.0 cm (2.7 x 1.7 x 1.6 in) Photo Copyright © 2014 Jeffrey M. Schwartz
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