Unknown
PANGAEA
In:
Supplement to: Carlson, Liisa (1995): Aluminum substitution in goethite in lake ore. Bulletin of the Geological Society of Finland, 67(1), 19-28, https://doi.org/10.17741/bgsf/67.1.002
Publication Date:
2023-08-28
Description:
The extent of substitution of Fe by Al in goethite in 32 lake ore samples collected from 11 lakes in Finland varied between 0 and 23 mol-%. The data indicated a negative relationship between Al-substitution and the particle size of lake ore. Differences in the Al-substitution were apparent between sampling sites, suggesting that kinetic and environmental variation in lake ore formation influences the substitution. Non-substituted goethite is formed in coarse-grained sediments with locally high concentrations of Fe due to iron-rich springs. Unit cell edge lengths and volumes of goethite varied as function of Al-subsitution but deviated from the Vegard relationship towards higher values.
Keywords:
NOAA and MMS Marine Minerals Geochemical Database; NOAA-MMS
Type:
Dataset
Format:
application/zip, 2 datasets
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