| Classification |
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| Species: | Quartz var: Chalcedony |
| Formula: | SiO2 |
| Confirmation |
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| Validity: | Confirmed |
| Confirmation Methods: | Visually Identified |
| Associated Minerals Based on Photo Data: |
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| Opal | ⓘ3 photos of Chalcedony associated with Opal at this locality. |
| Data |
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| Mineral Data: | Click here to view Chalcedony data |
| Locality Data: | Click here to view Quegstein, Wintermühlenhof, Königswinter, Rhein-Sieg-Kreis, Cologne, North Rhine-Westphalia, Germany |
| Data Identifiers |
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| Mindat Occurrence Record ID: | 857496 |
| Long-form Identifier: | 1:3:857496:1 |
| GUID (UUID V4): | 350d27a7-cbfc-4d5f-9913-2d59e8a2d3b6 |
| Nearest other occurrences of Chalcedony |
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| 4.4km (2.7 miles) | ⓘRabenlay (Rabenley), Oberkassel (Obercassel), Bonn, Cologne, North Rhine-Westphalia, Germany |
| 7.5km (4.6 miles) | ⓘVirneberg Mine, Rheinbreitbach, Unkel, Neuwied, Rhineland-Palatinate, Germany |
| 11.2km (7.0 miles) | ⓘVenus Mine, Linz am Rhein, Linz am Rhein, Neuwied, Rhineland-Palatinate, Germany |
| 34.8km (21.6 miles) | ⓘBüschhof Quarry (Schretzmair Quarry), Wirtenbach, Nümbrecht, Oberbergischer Kreis, Cologne, North Rhine-Westphalia, Germany |
| 53.0km (32.9 miles) | ⓘRadersberg quarry, Dreis-Brück, Daun, Vulkaneifel, Rhineland-Palatinate, Germany |
| 54.6km (33.9 miles) | ⓘBasalt quarry, Malscheid (Mahlscheid; Mahlscheiderkopf; Mahlscheider Kopf), Herdorf, Daaden-Herdorf, Altenkirchen, Rhineland-Palatinate, Germany |
| 54.7km (34.0 miles) | ⓘMaubacher Bleiberg, Hürtgenwald, Düren, Cologne, North Rhine-Westphalia, Germany |
| 69.4km (43.1 miles) | ⓘConstanze Mine, Langenaubach, Haiger, Lahn-Dill-Kreis, Giessen Region, Hesse, Germany |
| 70.3km (43.7 miles) | ⓘLimestone quarry, Medenbach, Breitscheid, Lahn-Dill-Kreis, Giessen Region, Hesse, Germany |
| 81.3km (50.5 miles) | ⓘHeeg farm, Großlittgen, Wittlich-Land, Bernkastel-Wittlich, Rhineland-Palatinate, Germany |
| References |
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| Reference Search (possible matching items) |
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 | | Journal (article/letter/editorial) | | für Mineralogie, Universität Hannover, Hannover, Germany. 2Department 87 88 HOFMANN ET AL. INTRODUCTION...Volcanic-hosted SFF Ebersbach near Colditz, Germany Höwenegg, Hegau, Germany Kozakov, Czech Republic Campsie, Scotland...host material SFF type 51º6.18N, 12º42.43E Chalcedony/chert in Permian rhyolite I, M 47º54.6N, 8º44...in Miocene melilite-nephilinite Chalcedony in Permian basalts Chalcedony in Devonian basalt Quartz varieties...basalts Quartz varieties in Tertiary basalts Chalcedony/chert in Tertiary basalts Quartz varieties in |  | | Journal (volume) | | Cambridge) VII. . . . Basin of the Eden, and north- western Coasts of Cumberland and Lancashire. ...260, — /or Berston Benston 2G2, — for South read North — — for between Gin Cross read from Gore Cross 273...an interesting object of com- parison with the north-eastern terminations of the same strata on the coast...northern extremity of Portland about sixteen miles north-westward to Burton Castle, and causing the sea to...Golden Cap The cliffs Vale of it bounded on the north and two into Weymouth and east distinct compart- |  | | Report (volume) | | catalogue of the Cretaceous and Tertiary plants of North America," published in 1898. This was followed in...catalogue of the Mesozoic and Cenozoic plants of North America." 3 A Supplement to that work was issued...present and now cover paleobotanical work in both North and South America (see American Paleobotany Report...On some fossil plants from the Devonian rocks of North Devon: Cambridge Philos. Soc. Proc., v. 18, p. 89-104...Observations on fossil plants from the Devonian of eastern North America, III, Gilboaphyton gol&ringiae, gen. et |  | | Report (volume) | | Catalogue of the Cretaceous and Tertiary Plants of North America," published in 1898. This was followed in...Catalogue of the Mesozoic and Cenozoic plants of North America." Supplements to that work were prepared... fig. 2; pl. 3, fig. 2; Acritarcha; Cambrian; Germany. See Norris and Sarjeant, 1965. ACANTHOPHYLLITES...1925, p. 189; Carboniferous (Culm) ; Frankenwald, Germany. ADIANTIDES Schimper, 1869. Adiantides nervosus...Discoasteridae; Upper Eocene; Wohrden, Holstein, Germany. AGARICITIES Meschinelli, 1892. Agaricites wardianus |  | | Book | | umfassenden Anweisungen, die C. D ölt er in seiner North America" verständlich Edelsteinkunde gibt, zum...man sich nämlich in der Einfallsebene um C einen Kreis mit einem beliebigen Halbmesser beschrieben, und...werden aber dauernd weitergeerwähnt. führt und der Kreis der synthetisch dargestellten Steine wird sich im...lohnt. Es steht sogar zu erwarten, daß sich der Kreis der als Schmuckverwendbaren Mineralien durch diese...Der letztere Fund ist von Flusse Serebrianaja, Kreis daß der Diamant im Ural weiter verbreitet ist, |
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