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Origin of hornstone
Words nearby hornstone
Example sentences from the Web for hornstone
About ten miles north of this point, the upper calcareous, or surface rock, embraces nodules of hornstone.
It was a piece of hornstone, which I told him his tribe had probably brought here centuries before to make arrowheads of.The Maine Woods|Henry David Thoreau
The geological locality of hornstone is remarkable; for it occurs in both ancient and recent formations.
The hornstone which occurs in secondary limestone is called chert by the English miners.
Another of the dikes of the north-east of Ireland has converted a mass of red sandstone into hornstone.A Manual of Elementary Geology|Charles Lyell.