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Quartz from Gyöngyösoroszi, Heves County, Hungary

  • Heves County
[var: Chalcedony]
Koch: Minerals of Hungary, 1985
[Chalcedony var: Agate]
[var: Chalcedony] GEODA 2002
Máfi Évi Jel. 1986; Farkas, I. M. & Weiszburg, T. G. (2009): Mitt. Österr. Mineral. Ges. 155, 57. (Abs.)
[var: Chalcedony] Bulletin of the Hungarian Geological Society
Szakáll-Jánosi: Minerals of Hungary,1995
[var: Amethyst]
Szakáll-Gatter-Szendrei:Hungarian Mineral Species,2005
Mineral Species of Hungary, 2005
GEODA, 1998
Personal (Ungvári Tamás) detected locality (May, 2005)
Book: 100 collecting sites of Hungary
Bulletin of the Hungarian Geological Society
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