Concepcion del Oro, Mun. de Concepcion del Oro, Zacatecas, Mexico
Modified cubes of brassy Pyrite to 10 mm are richly covered with translucent, white scalenohedrons of Calcite to 8 mm long. In excellent condition, this attractive old specimen dates to about the mid 1960s, when this collection was assembled.
ex. Paul Edwards collection