 | | Book | | articles. Sándor Szakáll (1953, Berettyóújfalu, Hungary) Head of the Department of Mineralogy, Herman Ottó...Mineralogical Regions Czech Republic (Milan Novák) Hungary (Sándor Szakáll) Poland (Ewa Kos/.owska) Romania...Mineral Species Czech Republic (Milan Novák). Hungary (Sándor Szakáll), Poland (Ewa Kos/.owska). Romania...Museums of the Carpathians Czech Republic (Moravia) Hungary Poland Romania Slovakia Ukraine 397 397 399 409...countries, (i.e. the Czech Republic. Slovakia, Poland. Hungary, Ukraine, and Romania). From a mineralogical viewpoint |  | Götze, Jens, Pan, Yuanming, Stevens-Kalceff, Marion, Kempe, Ulf, Müller, Axel (2015) Origin and significance of the yellow cathodoluminescence (CL) of quartz. American Mineralogist, 100 (7) 1469-1482 doi:10.2138/am-2015-5072 | Journal (article/letter/editorial) | | late-Variscan polymetallic veins of the Freiberg district (Erzgebirge, Germany), which is situated within...southern part of the Mátra Mts. (Hungary), in the neighborhood of Gyöngyöstarján, variable cryptocrystalline...cryptocrystalline quartz with traces of moganite and opal-CT, is characterized by bright yellow CL (sample...iron biomineralization of the Mátras Mountains, Hungary (CQMa); (f) silicified wood from Chemnitz, Germany...(2000) Collo-/crustiform quartz Mátra Mountains, Hungary CQMa Hydrothermal iron 20–150 °C Müller et al. |  | | Journal (article/letter/editorial) | | intercalated with macrocrystalline quartz, quartzine, opal-A, opal-CT, cristobalite and/or moganite. In addition...that opal-CT, opal-C, cristobalite and moganite are also common Recent studies have shown that opal‐CT...opal‐CT, opal‐C, cristobalite moganite stage are also common in in many agates worldwide [29,40,45,54]. Opal-CT...pure manyFigure agates worldwide [29,40,45,54]. Opal‐CT represents an intermediate stage between pure...amorphous opal-A (Figureof5). Opal-CT was detected tridymite sometimes intergrown with amorphous opal‐A (Figure |  | | Book | | Mohr-Westheide Occurrence and Distribution of Moganite and Opal-CT in Agates from Paleocene/Eocene Tuffs, El Picado...of Cuba). The agates consist of high amounts of opal and moganite. Surficial alteration of basic volcanic... T. Occurrence and Distribution of Moganite and Opal-CT in Agates from Paleocene/Eocene Tuffs, El Picado...intercalated with macrocrystalline quartz, quartzine, opal-A, opal-CT, cristobalite and/or moganite. In addition...quartzine (yellow). Recent studies have shown that opal-CT, opal-C, cristobalite and moganite are also common |
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Füledugó Quarry, Gyöngyöstarján, Gyöngyös District, Heves County, Hungary