Pb2Cu(AsO4)2(OH)·H2O is a mineral composed of lead, copper, arsenate, hydroxide, and water. It typically forms in oxidized zones of copper deposits and is known for its vibrant colors, which can range from green to blue. This mineral is part of the arsenate group and is often studied for its unique crystal structure and properties. The mineral is of interest in mineralogy and geology due to its potential applications and the presence of arsenic, which can have environmental implications. Its occurrence can provide insights into the conditions of mineral formation and the geochemical processes involved in copper ore deposits.