mineralogy

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A new phosphate from the Black Hills of South Dakota
William Parker Headden

American Journal of Science May 1891, s3-41 (245) 415-417; DOI: https://doi.org/10.2475/ajs.s3-41.245.415
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Supplementary notice on the polycrase of North and South Carolina
William Earl Hidden and J. B. Mackintosh

American Journal of Science May 1891, s3-41 (245) 423-425; DOI: https://doi.org/10.2475/ajs.s3-41.245.423
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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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On crystallized azurite from Arizona
Oliver Cummings Farrington

American Journal of Science April 1891, s3-41 (244) 300-307; DOI: https://doi.org/10.2475/ajs.s3-41.244.300
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On pink grossularite from Mexico
Carlos F. de Landero

American Journal of Science April 1891, s3-41 (244) 321-323; DOI: https://doi.org/10.2475/ajs.s3-41.244.321
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Notes on ferro-goslarite, a new variety of zinc sulphate
Herbert Allen Wheeler

American Journal of Science March 1891, s3-41 (243) 212; DOI: https://doi.org/10.2475/ajs.s3-41.243.212
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On the composition of pollucite and its occurrence at Hebron, Me
Horace Lemuel Wells

American Journal of Science March 1891, s3-41 (243) 213-220; DOI: https://doi.org/10.2475/ajs.s3-41.243.213
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On the chemical composition of aurichalcite
Samuel Lewis Penfield

American Journal of Science February 1891, s3-41 (242) 106-109; DOI: https://doi.org/10.2475/ajs.s3-41.242.106
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Powellite; calcium molybdate; a new mineral species
William Harlow Melville

American Journal of Science February 1891, s3-41 (242) 138-141; DOI: https://doi.org/10.2475/ajs.s3-41.242.138
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Columbite and tantalite from the Black Hills of South Dakota
William Parker Headden

American Journal of Science February 1891, s3-41 (242) 89-102; DOI: https://doi.org/10.2475/ajs.s3-41.242.89

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