Spessartine from Pennsylvania, USA
USA | |
| Mineralogy of Pennsylvania-1922 Samuel S. Gordon, pg. 167 |
| Rocks & Min.: 62: 176-178. |
| Rocks & Min.:62:176. |
| Rocks & Min.: 59:109-120 & 62:176-178. |
| Rocks & Min.: 59:109-120 & 62:176-178. |
| Rocks & Min.: 59:109-120 & 62:176-178. |
| The Mineralogyof Pennsylvania 1922-1965 Arthur Montgomery, The Academy of Natural Sciences of Philadelphia, p.4. |
| Rocks & Min.: 62: 176-178. |
Boothwyn, Upper Chichester Township, Delaware County, Pennsylvania, USA