Rare Hematite Tube Copper Replacement Agate Copper Replacement Agate This piece is presented as

This piece is presented as a mineral specimen study exploring the intersection of geological formation and biologically suggestive growth patterns

A mesmerizing example of nature's precision

Michigan mineral

Even when a nodule appears promising externally

or structurally unstable material that cannot be reliably cut into cabochons

Rare Hematite Tube Copper Replacement Agate Copper Replacement Agate This piece is presented asRare Hematite Tube Copper Replacement Agate Keweenaw Peninsula, Michigan An exceptionally uncommon Copper Replacement Agate containing preserved hematite tube structures and visible native copper mineralization. The dark tube like formations within this specimen are composed of hematite, while native copper occurs around portions of the tubes and can be observed within the agate itself, including a small but distinct area of copper banding. The