Unknown
PANGAEA
In:
Supplement to: Jones, L H P; Milne, Angela A (1956): Birnessite, a new manganese oxide mineral from Aberdeenshire, Scotland. Mineralogical Magazine, 31(235), 283-288, https://doi.org/10.1180/minmag.1956.031.235.01
Publication Date:
2023-08-28
Description:
A manganese pan near Birness contains grains of an optically uniaxial negative mineral near (Na0.7Ca0.3)Mn7O14·2·8H2O, giving an X-ray powder pattern similar to that of synthetic materials described as 'manganous manganite' and delta-MnO2. Material giving a similar pattern has been described from a natural occurrence in Canada, but no mineral name was assigned; the name birnessite is now proposed. The mineral is probably formed by air-oxidation of manganous oxides under alkaline conditions.
Keywords:
Aluminium oxide; Birness_J; Calcium oxide; Deposit type; DEPTH, sediment/rock; Description; Elevation of event; Iron oxide, Fe2O3; Latitude of event; Longitude of event; Manganese dioxide; Manganese oxide; NOAA and MMS Marine Minerals Geochemical Database; NOAA-MMS; Sample ID; Scotland; Sediment type; Silicon dioxide; Sodium oxide; Titanium dioxide; Water in rock
Type:
Dataset
Format:
text/tab-separated-values, 14 data points
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