Mineralogy Section, Natural History Museum of Los Angeles County
900 Exposition Blvd, Los Angeles, California 90007.
Gemological Institute of America
1660 Stewart St, Santa Monica, California 90404
Division of Geological and Planetary Sciences, 170-25, California Institute of Technology,
Pasadena, California 91125, U.S.A.
The new species lotharmeyerite from the Ojuela mine, Mapimi, Durango, Mexico, was recently described by Dunn (1983) . Unfortunately, the very small crystals in drussy growths wiich that author had at his disposal did not perit the determination of a number of important characteristics. The availability of larger, individual crystals from the same locality now makes possible a more compolete description of the species.