This rare copper sulfide specimen known as anilite, sourced from the hydrothermal veins of Michigan’s Upper Peninsula, offers a unique piece of geological history. Unearthed near Forest Street in Painesdale, Houghton County, the mineral displays a striking black, metallic. It shares its natural setting with quartz, minor domeykite, native copper, and malachite, each contributing to its formation.

When polished, the specimen’s bluish-gray reflections enhance its intricate details, providing insight into the natural processes behind its transformation. Its X-ray powder diffraction pattern, although closely resembling that of digenite, reveals subtle differences in key regions that affirm its distinct character—making it a highly sought-after addition for mineral collectors and enthusiasts alike.

Specifications:

Weight: 116 carats (23.2 grams)
Length: 2.4 inches
Width: 1.0 inches tapering to a point
Thickness: 0.316 inches at the base, thinning gracefully to 0.18 inches at the top

Ideal for serious collectors and admirers of natural art, this specimen embodies the rare and intricate beauty of Michigan’s geological legacy.