Copper and Zinc
|[ Sizes: Orig | Med | Small | Thumb ]|
The route up Keystone Canyon passes an old mine. There are many very thin coatings of copper carbonates and silicates, coloring some rocks bright green or blue. However, it is likely the ore was in the duller copper oxides at upper left, or in the ZnS-CuFeS2-sulfate like the sample at lower left.