Rzehak, A (1885): Description of the fossil manganese nodules found in the Oligocene clay deposits of Moravia, Brno area, Czech Republic [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.858742, Supplement to: Rzehak, A (1885): Ueber ein merkwürdiges Vorkommen manganhaltiger Minerale in der älteren Tertiärschichten Märhens (About a unique occurrence of manganese minerals in the older tertiary beds of Moravia). Zeitschrift für Kristallographie, Mineralogie und Petrographie; Abt. B, Mineralogische und petrographische Mitteilungen, 6(1), 87-92, https://doi.org/10.1007/BF02992512
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Abstract:
In the green Oligocene clay of Krizanovice (former Krzyzanowicz) the author found numerous black nodules. In the 3-4 centimeter thick black crust of a particular specimen the concentration in MnO2 is evaluated at 46.6% MnO2. The determination was done using the Volhard's method (precipitation of Fe by ZnO and titration with KMnO4). Only the dissoleved part in HCL was analysed. The non soluble residue was essentially a silica precipitate in the form of many gray flakes. The specific gravity of the crust was evaluated at 3.8. In the internal yellow core the amount of manganese is about 2.39% MnO2. Due to the light color it is judged to probably be in the form of Mn2O3.
Source:
Grant, John Bruce; Moore, Carla J; Alameddin, George; Chen, Kuiying; Barton, Mark (1992): The NOAA and MMS Marine Minerals Geochemical Database. National Geophysical Data Center, NOAA, https://doi.org/10.7289/V52Z13FT
Further details:
Warnken, Robin R; Virden, William T; Moore, Carla J (1992): The NOAA and MMS Marine Minerals Bibliography. National Geophysical Data Center, NOAA, https://doi.org/10.7289/V53X84KN
Project(s):
Coverage:
Latitude: 49.320200 * Longitude: 17.035320
Minimum DEPTH, sediment/rock: 0.000 m * Maximum DEPTH, sediment/rock: 0.000 m
Event(s):
Comment:
From 1983 until 1989 NOAA-NCEI compiled the NOAA-MMS Marine Minerals Geochemical Database from journal articles, technical reports and unpublished sources from other institutions. At the time it was the most extended data compilation on ferromanganese deposits world wide. Initially published in a proprietary format incompatible with present day standards it was jointly decided by AWI and NOAA to transcribe this legacy data into PANGAEA. This transfer is augmented by a careful checking of the original sources when available and the encoding of ancillary information (sample description, method of analysis...) not present in the NOAA-MMS database.
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Identification | ID | Rzehak, A | |||
| 2 | DEPTH, sediment/rock | Depth sed | m | Rzehak, A | Geocode | |
| 3 | Position | Position | Rzehak, A | Visual description | ||
| 4 | Deposit type | Deposit type | Rzehak, A | |||
| 5 | Quantity of deposit | Quantity | Rzehak, A | |||
| 6 | Size | Size | Rzehak, A | |||
| 7 | Substrate type | Substrate | Rzehak, A | |||
| 8 | Sediment type | Sediment | Rzehak, A | |||
| 9 | Geologic age name | Geol age | Rzehak, A | |||
| 10 | Comment | Comment | Rzehak, A | |||
| 11 | Description | Description | Rzehak, A | |||
| 12 | Manganese | Mn | % | Rzehak, A | Wet chemistry | |
| 13 | Description | Description | Rzehak, A | of Mn-analyses |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
12 data points