Chert from Pima County, Arizona, USA
USA | |
| Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 349. |
| MRDS database Dep. ID file #10039407, MRDS ID #M050040. |
Brown, W.H. (1939), Tucson Mountains, an Arizona basin and range type, Geol. Soc. Amer. Bull.: 50: 703. |