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Schwertmann, U; Carlson, L; Murad, E (1987): (Table 2, page 299) Chemical and mineral compositions of the samples (air-dry basis) [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.854199, In supplement to: Schwertmann, U et al. (1987): Properties of iron oxides in two Finnish lakes in relation to the environment of their formation. Clays and Clay Minerals, 35(4), 297-304, https://doi.org/10.1346/CCMN.1987.0350407

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Coverage:
Median Latitude: 61.963640 * Median Longitude: 28.032335 * South-bound Latitude: 61.483330 * West-bound Longitude: 25.900000 * North-bound Latitude: 62.443950 * East-bound Longitude: 30.164670
Minimum DEPTH, sediment/rock: m * Maximum DEPTH, sediment/rock: m
Event(s):
Enojarvi_C  * Latitude: 61.483330 * Longitude: 25.900000 * Elevation: 83.0 m * Lake water depth: approx. 0.8 m * Location: Finland * Method/Device: Dredge (DRG)
Murtojarvi_C  * Latitude: 62.443950 * Longitude: 30.164670 * Elevation: 103.0 m * Lake water depth: approx. 1.2 m * Location: Finland * Method/Device: Dredge (DRG)
Comment:
The lake ores were powdered in an agate ball mill for 20 minutes (< 50 µm).
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1989 NOAA-NCEI compiled the NOAA-MMS Marine Minerals Geochemical Database from journal articles, technical reports and unpublished sources from other institutions.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):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
Event labelEventSchwertmann, U
Latitude of eventLatitudeSchwertmann, U
Longitude of eventLongitudeSchwertmann, U
Elevation of eventElevationmSchwertmann, U
Sample IDSample IDSchwertmann, U
DEPTH, sediment/rockDepth sedmSchwertmann, UGeocode
Carbon, totalTC%Schwertmann, UWösthoff carmograph
Iron, solubleFe sol%Schwertmann, UPhotometry, dithionite-soluble fraction
Iron, solubleFe sol%Schwertmann, UPhotometry, oxalate-soluble fraction
10 Manganese, solubleMn sol%Schwertmann, UAAS, dithionite-soluble fraction
11 Manganese, solubleMn sol%Schwertmann, UAAS, oxalate-soluble fraction
12 SiliconSi%Schwertmann, UWet chemistry
13 MineralsMineralsSchwertmann, UX-ray diffraction (XRD)Iron and manganese oxides
Size:
120 data points

Data

Download dataset as tab-delimited text — use the following character encoding:


Event

Latitude

Longitude

Elevation [m]

Sample ID

Depth sed [m]

TC [%]
(Wösthoff carmograph)

Fe sol [%]
(Photometry, dithionite-solubl...)

Fe sol [%]
(Photometry, oxalate-soluble f...)
10 
Mn sol [%]
(AAS, dithionite-soluble fraction)
11 
Mn sol [%]
(AAS, oxalate-soluble fraction)
12 
Si [%]
(Wet chemistry)
13 
Minerals
(Iron and manganese oxides, X-...)
Murtojarvi_C 62.444030.164710337AI00.4947.84.930.050.0031.63goethite, ferrihydrite
Murtojarvi_C62.444030.164710338B00.4745.314.870.440.4102.97goethite, ferrihydrite
Murtojarvi_C62.444030.164710338C00.6346.013.840.510.4902.08goethite, ferrihydrite
Murtojarvi_C62.444030.164710338D00.6745.817.530.290.2502.27goethite, ferrihydrite
Murtojarvi_C62.444030.164710338E00.6643.316.141.991.9102.14goethite, ferrihydrite, (birnessite)
Murtojarvi_C62.444030.164710338F00.6439.613.724.534.4103.03goethite, ferrihydrite, birnessite
Murtojarvi_C62.444030.164710339B00.6544.320.250.530.4902.63goethite, ferrihydrite
Murtojarvi_C62.444030.164710339C00.4842.410.821.871.8102.03goethite, ferrihydrite
Murtojarvi_C62.444030.164710339D00.4346.75.580.540.4602.27goethite, ferrihydrite
Enojarvi_C 61.483325.9000834401.5244.82.390.580.3200.29goethite, ferrihydrite
Enojarvi_C61.483325.90008346A00.9839.46.383.853.5600.96goethite, ferrihydrite, lepidocrocite, (birnessite)
Enojarvi_C61.483325.90008346B01.1139.84.582.682.4400.59goethite, ferrihydrite, lepidocrocite
Enojarvi_C61.483325.90008346C01.2131.17.036.846.4700.58goethite, ferrihydrite, lepidocrocite, (birnessite)
Enojarvi_C61.483325.90008347A01.5048.01.710.280.0500.48goethite, ferrihydrite
Enojarvi_C61.483325.90008347B01.6048.71.920.430.1600.30goethite, ferrihydrite