YELLOW APATITE

Yellow Apatite deposits formed as a volcanogenic iron oxide deposit that filled a caldera area. A caldera is formed when a huge volcano erupts until its magma chamber s nearly empty. Everything collapses forming a huge crater. The volcano heats up and rushes again forming a second mountain composed mainly of iron oxide-rich rock. Later, hot hydrothermal solutions charged with chlorine and fluorine surge through these structures and fill gaseous openings with fluorapatite crystals forming on the walls of the pockets.