Check the listing for details. sandstone - arkosic fine grained Miocene sandstone - hand/display specimen. Listed at 8.20 USD. It is a bright and clean sandstone, not the coarse grained rusty arkose we visualize as typical. The flat cleavage surfaces of the feldspar grains are clearly visible under 20x magnification. This is a useful example of a fine-grained sandstone, and most students will see it as that.
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