Chalcopyrite crystals from the French Creek iron mines, Saint Peter, Chester County, Pennsylvania

Samuel Lewis Penfield

doi:10.2475/ajs.s3-40.237.207

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Penfield, S. L. (1890). Chalcopyrite crystals from the French Creek iron mines, Saint Peter, Chester County, Pennsylvania. American Journal of Science, s3-40(237), 207–211. https://doi.org/10.2475/ajs.s3-40.237.207

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Chalcopyrite Crystals From the French Creek Iron Mines, Saint Peter, Chester County, Pennsylvania