RARE Chalcosiderite Turquoise (Nevada) Matching Earring Slab Bead Pair 13x26mm
Chalcosiderite is a rare copper-iron phosphate mineral that belongs to the Turquoise group. It forms a complete solid solution with turquoise by substituting iron for aluminum. It is often described as the iron-rich variant of turquoise. It is often found in colors ranging from Apple-green, dark green, yellowish-green, or tan. Found in Nevada (such as the New Lander, Damele, and Lander Ranch mines) and Utah.
