2.75 LB Manganese Dendritic Iron Oxide Sandstone Rock Rough Specimen For Sale

The product is a 2.75 lb manganese dendritic iron oxide sandstone rock rough specimen from the United States. This unique specimen is perfect for lapidary enthusiasts looking for materials to create beautiful cabochons or for collectors interested in adding a rare piece to their collection. The manganese dendritic iron oxide creates striking patterns and colors within the sandstone, making it a visually appealing addition to any project or display.
Size: 2.75 pounds5.5\" x 4\" x 2.5\"
This specimen is a piece of sedimentary sandstone characterized by manganese oxide staining. The striking, fern-like or tree-branch-like patterns visible on the surface are known as dendrites. These are not fossils, but rather mineral growths that form when mineral-rich water (often containing manganese or iron) seeps into cracks and along bedding planes within the sedimentary rock, depositing minerals in these branching, fractal patterns. The host rock is a porous, iron-stained sandstone typical of the desert environments found in the American Southwest.