Foto: Matthias Rummer, 2001
| Material name: | Chert from the Ortenburger Jura |
| Synonyms: | Ortenburger Hornstein, "Kieselnieren" |
| Material (geologic): | Upper Jurassic (Malm β/Upper Oxfordian) chert |
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Foto: Matthias Rummer, 2001 |
(In part adapted from Unger 1984 and Binsteiner 1992)
| Geographical setting: | N/A |
| Material and colour: | N/A |
| Other information: | N/A |
| Knapping notes: | N/A |
| Archaeological description: | N/A |
| Locality: | Maierhof, Vilshofen district, Bavaria, Germany |
| Synonyms: |
Maierhof/Weng, "Kalkofen NW". Mining site D 13, according to the catalogue of the museum in Bochum (Weisgerber et al. (eds.) 1980) FlintSource sample 101. |
| Geographical description: | WhereItIs |
| Geographical co-ordinates: |
Lat. 48° 34' 11" N Long. 013° 12' 45" E (Mapdatum WGS 84)  click on the image for a detailed topographical map (detail from 1:50 000 sheet L7544 Griesbach i. Rottal, 45 KBytes) or here for a map with further sites in the Ortenburg region. |
| Co-ordinate precision: | The co-ordinates are those of the spot were we picked up the stones depicted below. There are probably better localities in the vicinity to get a good sample. |
| Other topographical information: | HowToGetThere |
| Additional information: | 
Foto: Rengert Elburg, 200. |
| WhatYouSeeAbove | |
| Visitors information: | PlacesToEatAndDrink |
| Sampling information: | It is a bit embarrasing to have to concede that we probably didn't pick the best spot in the area for our sampling. And that is an understatement. Only as we updated the pages of the Ortenburg area, we ordered the detailed geological map of the district to see that our sampling spot in Maierhof lies quite exactly between two of the very small patches with Jurassic limestones in the region. We followed the very precise co-ordinates given by Moser in 5000 Jahre Feuersteinbergbau, to discover afterwards that we missed the best spots by about 500 metres. |
 Foto: Matthias Rummer, 2001 Freshly knapped nodule of typical Ortenburg chert size: 67 mm |
 Foto: Matthias Rummer, 2001 Flake of coarse, opaque chert from Maierhof length: 45 mm |
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 Foto: Matthias Rummer, 2001 Darker and finer chert variety length: 44 mm |
| Sample description: | N/A |
| Locality: | Dötter, Vilshofen district, Bavaria, Germany |
| Synonyms: |
Mining site D 37, according to the catalogue of the museum in Bochum (Weisgerber et al. (eds.) 1980) FlintSource sample 101. |
| Geographical description: | WhereItIs |
| Geographical co-ordinates: |
Lat. 48° 34' 37" N Long. 013° 12' 25" E (Mapdatum WGS 84) For a detailed topographic map, see above |
| Co-ordinate precision: | Precision |
| Other topographical information: | HowToGetThere |
| Additional information: | 
Foto: Rengert Elburg, 2000 |
| WhatYouSeeAbove | |
| Visitors information: | PlacesToEatAndDrink |
| Sampling information: | N/A |
 Foto: Matthias Rummer, 2001 Small flake of fine chert with coarser zone under the very thin cortex size: 35 mm |
 Foto: Matthias Rummer, 2001 Split nodule of typical Ortenburg chert with slight zoning and coarser patches length: 63 mm |
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 Foto: Matthias Rummer, 2001 Small nodule of typical chert with numerous small fragments of fossils in the cortext length: 52 mm |
 Foto: Matthias Rummer, 2001 Flake of very dark, fine chert length: 44 mm |
| Sample description: | N/A |
| Last modified on: Sometime, 2002 |
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