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Fuchs Quarry, Hartkoppe, Sailauf, Hösbach, Spessart, Franconia, Bavaria, Germany

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Latitude & Longitude (WGS84): 50° 2' 1'' North , 9° 16' 23'' East
Latitude & Longitude (decimal): 50.03361,9.27306
Köppen climate type:Cfb : Temperate oceanic climate
Name(s) in local language(s):Steinbruch Fuchs, Hartkoppe, Sailauf, Hösbach, Spessart, Franken, Bayern, Deutschland

Quarry in altered rhyolite with vein-type Mn-Fe-U-As mineralisations contacting biotite schists.
Located on Hartkoppe mountain near Sailauf, about 7 km NE of Hösbach.

Mineral List

79 valid minerals. 2 (TL) - type locality of valid minerals.

Regional Geology

This geological map and associated information on rock units at or nearby to the coordinates given for this locality is based on relatively small scale geological maps provided by various national Geological Surveys. This does not necessarily represent the complete geology at this locality but it gives a background for the region in which it is found.

Click on geological units on the map for more information. Click here to view full-screen map on

Guadalupian - Late Carboniferous
259.9 - 323.2 Ma

ID: 2619592

Age: Paleozoic (259.9 - 323.2 Ma)

Description: volcanic

Comments: Rhyolitic lava predominant; also tuffs, dikes and subvolcanic intrusion

Lithology: Rhyolite (quartz porphyry)

Reference: Toloczyki, M., P. Trurnit, A. Voges, H. Wittekindt, A. Zitzmann. Geological Map of Germany 1:M. Bundesanstalt für Geowissenschaften und Rohstoffe. [94]

Data and map coding provided by, used under Creative Commons Attribution 4.0 License

This page contains all mineral locality references listed on This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.


Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Der Aufschluss 38(8/9), 275-277 (1987)
Der Aufschluss 38(10), 317-329 (1987)
Lorenz, J. (1991): Die Mineralien im Rhyolithsteinbruch von Sailauf. Der Aufschluss, 42, 1-38.
Der Aufschluss, 46, 105-122 (1995)
Mineralien-Welt 7(5), 33
U. Kolitsch (1996): Bergslagite from the rhyolite quarry near Sailauf, Spessart. Mineralien-Welt 7 (5), 45-46. (in German)
Lorenz, J. (2002): Brandtit-Fundstelle von Weltrang: Sailauf/Spessart. Mineralien-Welt 13 (4), 12-25.
Tobias Fusswinkel, Thomas Wagner, Thomas Wenzel, Markus Wälle, Joachim Lorenz (2013): Evolution of unconformity-related Mn-Fe-As vein mineralization, Sailauf (Germany): Insight from major and trace elements in oxide and carbonate minerals. Ore Geology Reviews 50, 28-51.
Fusswinkel T., Wagner T., Wenzel T., Wälle M., Lorenz J. (2014): Red bed and basement sourced fluids recorded in hydrothermal Mn-Fe-As veins, Sailauf (Germany): a LA-ICPMS fluid inclusion study. Chem. Geol., 363, 22-39.
Chukanov, N.V., Möhn, G., Pekov, I.V., Belakovskiy, D.I., Bychkova, Y.V., Gurzhiy, V.V., Lorenz, J.A. (2014): Okruschite, Ca2Mn2+5Be4(AsO4)6(OH)4∙6H2O, a new roscherite-group mineral from Sailauf, Bavaria, Germany. European Journal of Mineralogy, 26, 589-595

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