Sandstone arch, medium Arizona Sierra Ferruginous quartz lending to chalcopyrite's reputation as

lending to chalcopyrite's reputation as the "faux peacock ore

Many of these specimens are speckled with small pits on the faces

carved and polished

The radial pattern is still apparent and there are some sections of better-formed growth where you can see the good luster characteristic of epidote

I don't know how often breaks occur due to rough techniques in mining or cracking the geodes open

Sandstone arch, medium Arizona Sierra Ferruginous quartz lending to chalcopyrite's reputation asLocale: Arizona Approx size and weight variable by piece; dimensions at end These sandstone arches mimic the grand arches of Utahs national parks. They are made of Arizona Sierra sandstone sourced from central Arizona. Sandstone is a sedimentary rock composed of sand compacted and cemented together through geological processes, giving it a grainy texture. Sandstone with distinct layering like this is often called picture stone because the layers