Pyrargyrite from Golden Quadrangle (Golden Quadrilateral; Apuseni District), Romania
Romania | |
| Rădulescu Dan, Dimitrescu Radu, 1966, Mineralogia Topografică a României, Ed. Academiei RSR, 1966, p.325 |
| Zepharovich, V. R. v. (1859): Mineralogisches Lexicon für das Kaiserthum Österreich. I. Band. Verlag W. Braumüller, Wien, 630 pp. |