Spangolite specimens for sale

Spangolite is a copper aluminum sulfate hydroxide chloride mineral. It typically forms delicate, needle-like to tabular crystals that can display a soft, vitreous to silky luster and a pale to vivid greenish-blue color depending on the specific specimen. The mineral’s defining chemistry includes copper and aluminum with sulfate, hydroxide, and chloride components, and specimens often occur in crusts or small aggregates rather than robust single crystals. Notable occurrences include classic pockets in the southwestern United States and Mexican mining districts, where secondary alteration zones can produce fine, well-formed sprays and fans among associated sulfate minerals.