Zircon from Bucks County, Pennsylvania, USA
USA | |
| Gordon, Samuel G. (1922), Mineralogy of PA |
| The Mineralogy of Pennsylvania, Samuel G. Gordon, 1922, p. 90 |
USA | |
| Gordon, Samuel G. (1922), Mineralogy of PA |
| The Mineralogy of Pennsylvania, Samuel G. Gordon, 1922, p. 90 |
Finney's quarry, Northampton Township, Bucks County, Pennsylvania, USA