Actinolite from York County, Pennsylvania, USA
USA | |
| Geyer, Smith, Barnes, (1976) Mineral collecting in Pennsylvania pg 226-228 |
Kunz,1892. Gems & Precious Stones of N. America, p.205. |
USA | |
| Geyer, Smith, Barnes, (1976) Mineral collecting in Pennsylvania pg 226-228 |
Kunz,1892. Gems & Precious Stones of N. America, p.205. |