IOWAITE Sioux County, Iowa

摘要

IT HAPPENS FROM TIME TO TIME IN THE MINERALOGICAL WORLD that a mineral species gets discovered in one locality and, sometime thereafter, superior examples are found in a new far-flung area. Such is the case with iowaite. It was originally described from a drill core that penetrated Precambrian serpentinites 1,000-1,500 feet below the surface in Sioux County, Iowa (Kohls and Rodda 1967); approximately thirty-five years later, some of the finest examples known were collected at the Palabora mine, Limpopo Province, South Africa (Southwood and Cairncross 2017). One of these specimens is illustrated here.