Limonite from selected localities.
||Minerals of Colorado (1997) Eckel, E. B.|
|Minerals of Colorado (1997) Eckel, E. B.; Bove, D.J., Caine, J.S., and Lowers, H.A., 2012, Geologic and mineralogic controls on acid and metal-rich rock drainage in an alpine watershed, Handcart Gulch, Colorado: U.S. Geological Survey Scientific Investigations Report 2012–5067, 121 p.|
||Minerals of Colorado (1997) Eckel, E.B.|
|Minerals of Colorado (1997) E.B. Eckel; R. P Rothwell (1898) The Mineral Industry, its statistics, technology and trade. Vol. 6 Scientific Publishing Co., New York|