Publication Date:
2023-08-28
Description:
Ferromanganese nodules and encrustations have been analysed for selected minor elements (mainly Cd, Cr and Ti) by atomic absorption spectrophotometry. The preparation of ferromanganese-oxide samples for analysis varied according to the nature of the samples. Those covered by adhering sediment were washed clean with de-ionised water and left to dry but in some cases this treatment was not necessary. Where possible, 10 to 15 g. of sample was taken for crushing. Preliminary dessication procedure was required for ferromanganese-oxide samples, because of their tendency to absorb atmospheric moisture when in a finely divided state. After 2 ml. of 6M HCL had been added to the beakers, they were placed on a hotplate and heated gently for about 2 hours to breakdown the Mn oxides prior to the addition of the main reagents. All the elements investigated were analysed in all samples by atomic absorption spectrophotometry using a Perkin Elmer 403 spectrophotometer.
Keywords:
013GK+F; 24-234; Argo; Atlantic Ocean; Atomic absorption spectrophotometry; Barium; Beryllium; Cadmium; Chromium; Deposit type; DEPTH, sediment/rock; Description; DODO; DODO-112P; Dredge; DRG; DRILL; Drilling/drill rig; Elevation of event; Event label; Gallium; GC; Geochemistry; Glomar Challenger; Gravity corer; Identification; Indian Ocean; Indian Ocean//RIDGE; Latitude of event; Leg24; Lithium; Longitude of event; Magnesium; manganese micronodule; manganese nodule; Molybdenum; Niobium; NOAA and MMS Marine Minerals Geochemical Database; NOAA-MMS; ocean; PC; Phosphorus; Piston corer; Potassium; sediment; Sediment type; SH73:077; SH73:100; SH73:169; SH73:171; SH73:178; Shack. 1322GC; Shackleton; Shackleton73/2; Shackleton73/2_077; Shackleton73/2_100; Shackleton73/3; Shackleton73/3_169; Shackleton73/3_171; Shackleton73/3_178; Shackleton75/5; Shackleton75/5_1322c; Sodium; Strontium; Sulfur; Tin; Titanium; TRANSINDIK; V29; V29-54; V29-59; V29-67; VA-07; VA07/013GK+F; Valdivia (1961); Vanadium; Vema; Zirconium
Type:
Dataset
Format:
text/tab-separated-values, 138 data points
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