14.2 MB (515.3 KB compressed)
2310 x 2148 pixels
19.6 x 18.3 cm ⏐ 7.7 x 7.2 in (300dpi)
CHARLES D. WINTERS / SCIENCE PHOTO LIBRARY CHARLES D. WINTERS / SCIENCE PHOTO LIBRARY
Calcite under UV light. Calcite is a carbonate mineral and the most stable polymorph of calcium carbonate (CaCO3). It is also fluorescent, as seen here.
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