Clay ironstone


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an ore of iron consisting of the oxide or carbonate of iron mixed with clay or sand.
See under Clay.

See also: Clay, Ironstone

Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.
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The ore is clay ironstone consisting of carbonate of iron with clay, calcium, magnesium carbonates and phosphorus.
TEESSIDE TRIVIA

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