An excellent pseudomorph of the iron oxide Goethite replacing a rhomb of Siderite. This is the most well defined, sharp single crystal of this material that I’ve seen. Most of the pseudomorphs from this area are dull, badly damaged, rounded and unattractive. Ex Jim and Paula Wilson collection. Locality: C. G. Coil claim on Goethite Hill, near Lake George, Park County, Colorado.
