25.0 MB (1.3 MB compressed)
2677 x 3263 pixels
22.6 x 27.7 cm ⏐ 8.9 x 10.9 in (300dpi)
NATURAL HISTORY MUSEUM, LONDON / SCIENCE PHOTO LIBRARY NATURAL HISTORY MUSEUM, LONDON / SCIENCE PHOTO LIBRARY
Oolitic limestone. Limestone mainly consists of calcium carbonate. Ooliths, or ooids, are spherical grains of carbonate composed of concentric layers. Specimen from Rutland, UK.
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