Chalcedony from Strzelce County, Opole Voivodeship, Poland
Poland | |
| Chodyniecka (1967) Bazalt z Góry Św. Anny |
| Kwiatkowski 2005, Origin of chert nodules from the Polish Muschelkalk, Middle Triassic |
Kwiatkowski S., (2005) Origin of chert nodules from the Polish Muschelkalk, Middle Triassic Kostecka A.,(1972) Calcite paramorphs in the aragonite concretions |
Glacial deposit, Strzelce Opolskie, Gmina Strzelce Opolskie, Strzelce County, Opole Voivodeship, Poland