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chalcedonic

Example Sentences

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When examining the agates, the chalcedonic and jaspery rocks, some of the limestones, and even the bright red sandstones, I was forcibly struck with their resemblance to deposits formed in the neighbourhood of volcanic action.

From Geological Observations on South America by Darwin, Charles

Her eyes of emerald, stars in her opal face, chalcedonic, looked inexorable, and her bosom of precious stones heaved not.

From Psyche by Couperus, Louis

In sinking wells in this district the chalcedonic strata seem to be the lowest.

From Geological Observations on South America by Darwin, Charles

It contains a very few pebbles of quartz, and occasionally layers of chalcedonic nodules, like those of chert in our Greensand.

From Volcanic Islands by Darwin, Charles

At a lower part in the same rock, less compact, I found a beautiful chalcedonic cast, apparently of a terebra.

From Three Expeditions into the Interior of Eastern Australia, Volume 1 by Mitchell, Thomas

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