Konrad Mine, Bleckenstedt, Salzgitter, Lower Saxony, Germanyi
| Regional Level Types | |
|---|---|
| Konrad Mine | Mine |
| Bleckenstedt | - not defined - |
| Salzgitter | Independent City |
| Lower Saxony | State |
| Germany | Country |
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Latitude & Longitude (WGS84):
52° 11' 2'' North , 10° 24' 10'' East
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Salzgitter | 101,079 (2017) | 3.1km |
| Lengede | 12,993 (2011) | 6.9km |
| Leiferde | 4,451 (2011) | 7.5km |
| Rothenburg | 9,663 (2020) | 8.4km |
| Cramme | 959 (2011) | 8.4km |
Other Languages:
German:
Grube Konrad
Ancient iron mine.
Host rocks: Coral oolitic Oxfordian and Kimmeridgian formations of the Gifhorn trough of the North Germanic Basin, affected by Permian Vechelde and Broistedt salt domes diapirism.
The Konrad iron ore mine extracted ore from a deposit in the Gifhorn Trough starting in 1965. It is accessed via two shafts: Konrad I, approximately 1232 meters deep, and Konrad II, approximately 999 meters deep. The ore consists of oolitic iron ores (Minette) of the Middle Coral Oolite (Oxford, Malm, Jurassic), formed sedimentarily in coastal areas. The deposit is located east of the Broistedt salt dome. The iron ore was deposited syngenetically with the formation of the salt domes in subsidence basins.
The deposit itself does not reach the Earth's surface at any point and was discovered in 1933 during oil drilling. By today's standards, the deposit is considered low-grade ore, and mining ceased in 1976. A total of 6.6 million tons of iron ore were extracted.
After ore mining ceased, investigations began into the suitability of the Konrad mine as a potential repository for low- to intermediate-level radioactive waste, due to its particularly favorable structural and hydrogeological conditions.
The site's suitability as a repository is attributed to its great depth of approximately 1000 meters and the several hundred meters of overburden of very low-permeability Jurassic and Cretaceous clay, which acts as a hydraulic barrier against surface and deep groundwater. Model calculations indicate that, in the long term, no release of radionuclides into the biosphere is expected and that the maximum radioactive contamination will be about 100 times lower than the range of natural radioactivity.
Mineralogically, the deposit is known for what are arguably the most beautiful celestine crystals in Germany.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsMineral List
13 valid minerals.
Rock Types Recorded
Note: data is currently VERY limited. Please bear with us while we work towards adding this information!
Select Rock List Type
Alphabetical List Tree DiagramDetailed Mineral List:
| ⓘ Anhydrite Formula: CaSO4 |
| ⓘ Aragonite Formula: CaCO3 |
| ⓘ Baryte Formula: BaSO4 |
| ⓘ Calcite Formula: CaCO3 |
| ⓘ Celestine Formula: SrSO4 |
| ⓘ Chamosite Formula: Fe2+5Al(AlSi3O)10(OH)8 References: Dr. Günter Grundmann collectionIdentified by Dr. Günter Grundmann: Polarised-light microscopy |
| ⓘ Goethite Formula: Fe3+O(OH) References: Dr. Günter Grundmann collectionIdentified by Dr. Günter Grundmann: Polarised-light microscopy |
| ⓘ Halite Formula: NaCl |
| ⓘ Hematite Formula: Fe2O3 References: Dr. Günter Grundmann collectionIdentified by Dr. Günter Grundmann: Polarised-light microscopy |
| ⓘ 'Limonite' |
| ⓘ Marcasite Formula: FeS2 |
| ⓘ 'Petrified Wood' References: Dr. Günter Grundmann collectionIdentified by Dr. Günter Grundmann: Polarised-light microscopy |
| ⓘ Pyrite Formula: FeS2 |
| ⓘ Quartz Formula: SiO2 References: Dr. Günter Grundmann collectionIdentified by Dr. Günter Grundmann: Polarised-light microscopy |
| ⓘ Sphalerite Formula: ZnS |
List of minerals arranged by Strunz 10th Edition classification
| Group 2 - Sulphides and Sulfosalts | |||
|---|---|---|---|
| ⓘ | Sphalerite | 2.CB.05a | ZnS |
| ⓘ | Pyrite | 2.EB.05a | FeS2 |
| ⓘ | Marcasite | 2.EB.10a | FeS2 |
| Group 3 - Halides | |||
| ⓘ | Halite | 3.AA.20 | NaCl |
| Group 4 - Oxides and Hydroxides | |||
| ⓘ | Goethite | 4.00. | Fe3+O(OH) |
| ⓘ | Hematite | 4.CB.05 | Fe2O3 |
| ⓘ | Quartz | 4.DA.05 | SiO2 |
| Group 5 - Nitrates and Carbonates | |||
| ⓘ | Calcite | 5.AB.05 | CaCO3 |
| ⓘ | Aragonite | 5.AB.15 | CaCO3 |
| Group 7 - Sulphates, Chromates, Molybdates and Tungstates | |||
| ⓘ | Anhydrite | 7.AD.30 | CaSO4 |
| ⓘ | Baryte | 7.AD.35 | BaSO4 |
| ⓘ | Celestine | 7.AD.35 | SrSO4 |
| Group 9 - Silicates | |||
| ⓘ | Chamosite | 9.EC.55 | Fe2+5Al(AlSi3O)10(OH)8 |
| Unclassified | |||
| ⓘ | 'Limonite' | - | |
| ⓘ | 'Petrified Wood' | - | |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | ⓘ Chamosite | Fe52+Al(AlSi3O)10(OH)8 |
| H | ⓘ Goethite | Fe3+O(OH) |
| C | Carbon | |
| C | ⓘ Aragonite | CaCO3 |
| C | ⓘ Calcite | CaCO3 |
| O | Oxygen | |
| O | ⓘ Anhydrite | CaSO4 |
| O | ⓘ Aragonite | CaCO3 |
| O | ⓘ Baryte | BaSO4 |
| O | ⓘ Calcite | CaCO3 |
| O | ⓘ Celestine | SrSO4 |
| O | ⓘ Chamosite | Fe52+Al(AlSi3O)10(OH)8 |
| O | ⓘ Goethite | Fe3+O(OH) |
| O | ⓘ Hematite | Fe2O3 |
| O | ⓘ Quartz | SiO2 |
| Na | Sodium | |
| Na | ⓘ Halite | NaCl |
| Al | Aluminium | |
| Al | ⓘ Chamosite | Fe52+Al(AlSi3O)10(OH)8 |
| Si | Silicon | |
| Si | ⓘ Chamosite | Fe52+Al(AlSi3O)10(OH)8 |
| Si | ⓘ Quartz | SiO2 |
| S | Sulfur | |
| S | ⓘ Anhydrite | CaSO4 |
| S | ⓘ Baryte | BaSO4 |
| S | ⓘ Celestine | SrSO4 |
| S | ⓘ Marcasite | FeS2 |
| S | ⓘ Pyrite | FeS2 |
| S | ⓘ Sphalerite | ZnS |
| Cl | Chlorine | |
| Cl | ⓘ Halite | NaCl |
| Ca | Calcium | |
| Ca | ⓘ Anhydrite | CaSO4 |
| Ca | ⓘ Aragonite | CaCO3 |
| Ca | ⓘ Calcite | CaCO3 |
| Fe | Iron | |
| Fe | ⓘ Chamosite | Fe52+Al(AlSi3O)10(OH)8 |
| Fe | ⓘ Goethite | Fe3+O(OH) |
| Fe | ⓘ Hematite | Fe2O3 |
| Fe | ⓘ Marcasite | FeS2 |
| Fe | ⓘ Pyrite | FeS2 |
| Zn | Zinc | |
| Zn | ⓘ Sphalerite | ZnS |
| Sr | Strontium | |
| Sr | ⓘ Celestine | SrSO4 |
| Ba | Barium | |
| Ba | ⓘ Baryte | BaSO4 |
Other Regions, Features and Areas containing this locality
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Konrad Mine, Bleckenstedt, Salzgitter, Lower Saxony, Germany