rhyolites

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Piedmontite and scheelite from the ancient rhyolite of South Mountain, Pennsylvania
George Huntington Williams

American Journal of Science July 1893, s3-46 (271) 50-57; DOI: https://doi.org/10.2475/ajs.s3-46.271.50
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The minerals in hollow spherulites of rhyolite from Glade Creek, Wyoming
Joseph Paxson Iddings and S. L. Penfield

American Journal of Science July 1891, s3-42 (247) 39-46; DOI: https://doi.org/10.2475/ajs.s3-42.247.39
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On the occurrence of topaz and garnet in lithophyses of rhyolite
Charles Whitman Cross

American Journal of Science June 1886, s3-31 (186) 432-438; DOI: https://doi.org/10.2475/ajs.s3-31.186.432
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On sanidine and topaz, etc., in the nevadite of Chalk Mountain, Colorado
Charles Whitman Cross

American Journal of Science February 1884, s3-27 (158) 94-96; DOI: https://doi.org/10.2475/ajs.s3-27.158.94

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