minerals

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Contributions to mineralogy; 50
F. A. Genth

American Journal of Science May 1891, s3-41 (245) 394-400; DOI: https://doi.org/10.2475/ajs.s3-41.245.394
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On halotrichite or feather alum, from Pitkin County, Colorado
E. H. S. Bailey

American Journal of Science April 1891, s3-41 (244) 296-297; DOI: https://doi.org/10.2475/ajs.s3-41.244.296
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Some observations on the beryllium minerals from Mount Antero
Samuel L. Penfield

American Journal of Science December 1890, s3-40 (240) 488-490; DOI: https://doi.org/10.2475/ajs.s3-40.240.488
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On the occurrence of nitrogen in uraninite and on the composition of uraninite in general
W. F. Hillebrand

American Journal of Science November 1890, s3-40 (239) 384-394; DOI: https://doi.org/10.2475/ajs.s3-40.239.384
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Contributions to mineralogy
F. A. Genth

American Journal of Science August 1890, s3-40 (236) 114-120; DOI: https://doi.org/10.2475/ajs.s3-40.236.114
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On a new variety of zinc sulphide from Cherokee County, Kansas
James D. Robertson

American Journal of Science August 1890, s3-40 (236) 160-161; DOI: https://doi.org/10.2475/ajs.s3-40.236.160
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Notes on some secondary minerals of the amphibole and pyroxene groups
Charles Whitman Cross

American Journal of Science May 1890, s3-39 (233) 359-370; DOI: https://doi.org/10.2475/ajs.s3-39.233.359
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On the occurrence of polycrase or of an allied species in both North and South Carolina
William E. Hidden and J. B. Mackintosh

American Journal of Science April 1890, s3-39 (232) 302-306; DOI: https://doi.org/10.2475/ajs.s3-39.232.302
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Minium from Leadville
J. D. Hawkins

American Journal of Science January 1890, s3-39 (229) 42-43; DOI: https://doi.org/10.2475/ajs.s3-39.229.42
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Crystallized bertrandite from Stoneham, Maine, and Mount Antero, Colorado
Samuel L. Penfield

American Journal of Science March 1889, s3-37 (219) 213-216; DOI: https://doi.org/10.2475/ajs.s3-37.219.213

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