Trancas Geode - phosphorescence after SW light. The calcite glows blue and continues to glow for several seconds after removing the UV. This image is actually two separate images stacked in order to get better depth of field with minimal light.
| Make | NIKON CORPORATION | Model | NIKON D90 |
| Aperture Value | f/11 | Color Space | sRGB |
| Exposure Bias Value | 0 EV | Exposure Program | Manual |
| Flash | No Flash | Focal Length | 100 mm |
| ISO | 1600 | Metering Mode | Multi-Segment |
| Shutter Speed Value | 5 sec | Date/Time | Thu 15 Sep 2011 09:34:25 AM PDT |
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