silicates

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Quartz from the Emerald and Hiddenite Mine, North Carolina
Henry A. Miers

American Journal of Science December 1893, s3-46 (276) 420-424; DOI: https://doi.org/10.2475/ajs.s3-46.276.420
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On some minerals from the manganese mines of St. Marcel, in Piedmont, Italy
S. L. Penfield

American Journal of Science October 1893, s3-46 (274) 288-295; DOI: https://doi.org/10.2475/ajs.s3-46.274.288
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Alnoite containing an uncommon variety of melilite
Charles Henry Smyth

American Journal of Science August 1893, s3-46 (272) 104-107; DOI: https://doi.org/10.2475/ajs.s3-46.272.104
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On cookeite from Paris and Hebron, Me
Samuel Lewis Penfield

American Journal of Science May 1893, s3-45 (269) 393-396; DOI: https://doi.org/10.2475/ajs.s3-45.269.393
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Mineralogical notes
Samuel L. Penfield

American Journal of Science May 1893, s3-45 (269) 396-399; DOI: https://doi.org/10.2475/ajs.s3-45.269.396
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On a rose-colored lime-and aluminabearing variety of talc
William Herbert Hobbs

American Journal of Science May 1893, s3-45 (269) 404-407; DOI: https://doi.org/10.2475/ajs.s3-45.269.404
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Datolite from Loughboro, Ont
Louis Valentine Pirsson

American Journal of Science February 1893, s3-45 (266) 100-102; DOI: https://doi.org/10.2475/ajs.s3-45.266.100
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Contributions to mineralogy; No. 54. With crystallographic notes by S. L. Penfield
F. A. Genth

American Journal of Science November 1892, s3-44 (263) 381-389; DOI: https://doi.org/10.2475/ajs.s3-44.263.381
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Note on the constitution of ptilolite and mordenite
F. W. Clarke

American Journal of Science August 1892, s3-44 (260) 101-102; DOI: https://doi.org/10.2475/ajs.s3-44.260.101
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A new occurrence of ptilolite
[Charles] Whitman Cross and L. G. Eakins

American Journal of Science August 1892, s3-44 (260) 96-101; DOI: https://doi.org/10.2475/ajs.s3-44.260.96

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