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World Sands Collection
Kasugaura, Katahara, Gamagouri, Aichi, Japan
This beach sand is fine/medium-sized.  It consists of mostly quartz, and then feldspar, sandstone, shale and seashells.  Most of the grains are 0.2-0.3mm in diameter, and a few 2mm or less in diameter grains of rocks and 4mm or less in diameter fragments of seashells.
one scale for 1mm
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