Opal from selected localities.
Romania | |
| Marinel Kovacs, Alexandrina FĂźlĂśp, 2003, Neogene volcanism in Gutâi Mts., (Eastern Carpathians). A Review. Studia Universitatis, BabeČ-Bolyai, Geologia, vol.48, 2003, p.3-16 |
| Jude Radu (2010). An overview of the OaČ and Gutâi Neogene Metallogenetic District. Romanian Journal of Mineral Deposits, Mineral Resources of Carpathians area. 10th-12th September 2010, Baia Mare, Romania. vol 84, p.94-95 |
ČurdeČti, ČurdeČti village, ČiČeČti, MaramureČ County, Romania