
doi: 10.1007/bf00389227
Fine parallel lines were found on fractured surface of opal under reflection optical microscope. Study of replication electron microscopy of fractured surface with fine lines revealed three distinctive patterns. These were (1) lamellae with voids and without voids, (2) lamellae with two kinds of voids, and (3) lamellae without voids.
550.geology, Article
550.geology, Article
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