Reported initially as mineral "F" of A. F. Woodward et al (1941) and was reported here prior to its description by Hindman from Utah; however, there was insufficient material to perform definative analysis with the state-of-the-art of the period. Occurs as a secondary mineral as crystalline films coating joint planes of the quartz monzonite porphyry and contact rock near the southern end of the commercial quarry.
Crestmore quarries, Crestmore, Jurupa Valley, Riverside County, California, USA