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Major And Trace Element Composition Of Copiapite-Group Minerals And Coexisting Water From The Richmond Mine, Iron Mountain, California, Heather E. Jamieson, Clare Robinson, Charles N. Alpers, R. Blaine Mccleskey, D. Kirk Nordstrom, Ronald C. Peterson
Major And Trace Element Composition Of Copiapite-Group Minerals And Coexisting Water From The Richmond Mine, Iron Mountain, California, Heather E. Jamieson, Clare Robinson, Charles N. Alpers, R. Blaine Mccleskey, D. Kirk Nordstrom, Ronald C. Peterson
Geochemistry of Sulfate Minerals: A Tribute to Robert O. Rye
Copiapite-group minerals of the general formula AR4(SO4)6(OH)2• nH2O, where A is predominantly Mg, Fe2+, or 0.67Al3+, R is predominantly Fe3+, and n is typically 20, are among several secondary hydrous Fe sulfates occurring in the inactive mine workings of the massive sulfide deposit at Iron Mountain, CA, a USEPA Superfund site that produces extremely acidic drainage. Samples of copiapite-group minerals, some with coexisting water, were collected from the Richmond mine. Approximately 200 mL of brownish pore water with a pH of ‒0.9 were …