Assertion: agate's band | /r/CapableOf | measure around 1 micrometer
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Source sentences:
text: Individual agates show a zonation of water content (both as silanole-groups and molecular water) parallel to the banding, but often on a much finer scale, with individual compositional bands measuring around 1 micrometer (Frondel, 1982; Frondel, 1985).