Sicklerite from Pacific Plate
USA | |
| San Diego Natural History Museum |
Palache, Charles, Berman, Harry, Frondel, Clifford (1951) The System of Mineralogy (7th ed.) Vol. 2 - Halides, Nitrates, Borates, Carbonates, Sulfates, Phosphates, Arsenates, Tungstates, Molybdates, Ect. John Wiley and Sons, New York. | |
| Mineralogical Record (2002): 33(5): 388. |
| Dana 6:A3:72. |
| Schaller, W.T. (1912) New manganese phosphates from the gem tourmaline field of Southern California. Journal of the Washington Academy of Sciences: 2: 143-145. |
San Diego Mining Company (2022) |
Stewart Mine, Tourmaline Queen Mountain, Pala, Pala Mining District, San Diego County, California, USA