Aschan, Joh:s (1906): (Tables, page 17-18) Chemical composition of ferromanganese concretions of the lakes of Northern Savolax in Eastern Finland [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.849208, Supplement to: Aschan, J (1906): Om några förekomster af manganrik sjömalm i norra Savolax = On occurrences of enrichment in managanese in the lake ores of Savolax (Eastern Finland). original at http://digi.kansalliskirjasto.fi/aikakausi/binding/1122928, Teknikern, 456, 78-80, hdl:10013/epic.45961.d001
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Abstract:
This paper discusses the occurrence of manganese-rich concretions in the lakes of Northern Savolax in Eastern Finland. The samples were collected in the summer of 1905 and left to dry for 2 months at room temperature. The quantity of H2O mentionned in the analysis was obtained by dessication at 155°C. The amount of Mn is calulated as MnO2 although other valences might be present in the samples. The contents in CO2 and organic substances was not determined. J. Aschan determined that as a general rule, in Finland the manganese rich lake deposits are rather associated with soft bottom sediments while the iron rich deposits are more assocaited with hard or sandy bottoms.
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:
Median Latitude: 63.152059 * Median Longitude: 27.581768 * South-bound Latitude: 61.347250 * West-bound Longitude: 27.222730 * North-bound Latitude: 63.567660 * East-bound Longitude: 29.214640
Minimum DEPTH, sediment/rock: 0 m * Maximum DEPTH, sediment/rock: 0 m
Event(s):
Kilpijarvi_A * Latitude: 63.567430 * Longitude: 27.227670 * Elevation: 86.0 m * Lake water depth: 5 m * Location: Finland * Method/Device: Dredge (DRG)
Comment:
Samples have been dried at 155°C in order to evaluate the contents in H2O.Depth of lake see Event(s) information.
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1989 NOAA-NCEI compiled the NOAA-MMS Marine Minerals Geochemical Database from journal articles, technical reports and unpublished sources from other institutions.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 | Event label | Event | Aschan, Joh:s | |||
| 2 | Latitude of event | Latitude | Aschan, Joh:s | |||
| 3 | Longitude of event | Longitude | Aschan, Joh:s | |||
| 4 | Elevation of event | Elevation | m | Aschan, Joh:s | ||
| 5 | DEPTH, sediment/rock | Depth sed | m | Aschan, Joh:s | Geocode | |
| 6 | Identification | ID | Aschan, Joh:s | of Aschan | ||
| 7 | Iron oxide, Fe2O3 | Fe2O3 | % | Aschan, Joh:s | Wet chemistry | |
| 8 | Manganese dioxide | MnO2 | % | Aschan, Joh:s | Wet chemistry | |
| 9 | Silicon dioxide | SiO2 | % | Aschan, Joh:s | Wet chemistry | |
| 10 | Aluminium oxide | Al2O3 | % | Aschan, Joh:s | Wet chemistry | |
| 11 | Calcium oxide | CaO | % | Aschan, Joh:s | Wet chemistry | |
| 12 | Magnesium oxide | MgO | % | Aschan, Joh:s | Wet chemistry | |
| 13 | Phosphorus pentoxide | P2O5 | % | Aschan, Joh:s | Wet chemistry | |
| 14 | Water content, wet mass | Water wm | % | Aschan, Joh:s | Wet chemistry | |
| 15 | Deposit type | Deposit type | Aschan, Joh:s | |||
| 16 | Area/locality | Area | Aschan, Joh:s |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
186 data points