 | | Journal (article/letter/editorial) | | The three cone-building stages include: (I) Torrecillas (oldest ); (II) Espolón de Oro (middle); and...florencite; (2) jarosite and chemical analogs such as natrojarosite; (3) soluble Al- and Fehydroxysulfates, including...Minamiite Florencite Jarosite group Jarosite Natrojarosite Ammoniojarosite Other Fe–Al sulfates Potassium...re-precipitation, as do the sulfate minerals in acid mine drainage (Bigham and Nordstrom, 2000). Soluble Al-...magmatic-steam alunite at the El Indio district, Chile (Deyell et al., this volume). The coarse anhydrite/ |  | | Book | | Eulalia District....... El Potosi Mine............. San Antonio Mine....... Cusihuiriachic District................................. Minerals of Ojuela Mine .... . Velardena District.........................Guanajuato District ..................... El Sanlin Mine......................... San Miguel de Allende ...assistant superintendent, both of Fresnillo’s Naica mine, helped with data and review. Dr. Edwin Roedder...made possible our visit to the Esperanza fluorite mine. Engineer Macario Munoz, Comision de Fomento Minero |
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