Al₁₃Si₅O₂₀ (OH,F)₁₈Cl

This sample of zunyite is displayed in the Smithsonian Museum of Natural History. Zunyite is an silicate mineral of aluminum which contains fluorine and chlorine. It has the composition Al₁₃Si₅O₂₀(OH,F)₁₈Cl. This sample is about 14x17 cm and is from Electric Meatball mine, Quartzite, Arizona.