trachytes

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Note on some volcanic rocks from Gough's Island, South Atlantic
L. V. Pirsson

American Journal of Science May 1893, s3-45 (269) 380-384; DOI: https://doi.org/10.2475/ajs.s3-45.269.380
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Contributions to the geological chemistry of Yellowstone National Park
H. Leffmann and W. Beam

American Journal of Science May 1883, s3-25 (149) 351-352; DOI: https://doi.org/10.2475/ajs.s3-25.149.351
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On some points in lithology
J. D. Dana

American Journal of Science December 1878, s3-16 (96) 431-440; DOI: https://doi.org/10.2475/ajs.s3-16.96.431
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Contributions to lithology; Part III, On some eruptive rocks
T. Sterry Hunt

American Journal of Science July 1864, s2-38 (112) 91-104; DOI: https://doi.org/10.2475/ajs.s2-38.112.91

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