This old timer comes out of the California Academy of Science collection having been donated by A. Court. Very small opaque calcite rhombohedrons clustered in spherical mounds in a daisy chain fashion on a wulfenite matrix eith sharp butterscotch crystals scattered about. Locality: Erupcion Mine, Sierra de Los Lamentos, Mun de Ahumada, Chihuahua, Mexico Composition: Calcium carbonate with lead molybdate
