Publication Date:
2023-08-28
Description:
The sulfide deposit at Site 471 occurs between overlying pelagic sediment and underlying basalt. The deposit is vertically zoned and consists, from top to bottom, of the following mineral assemblages: (1) pyrite, chalcopyrite, and Zn-sulfide in chert and calcite gangue (~ 35 cm thick); (2) a 5-cm-thick metalliferous sediment layer and (3) a 4-cm-thick chert layer. The calcite gangue appears at a later stage than chert gangue in the sequence of deposition, also filling in voids and fractures. The manganese content of calcite is particularly high and varies systematically, reaching a maximum at the top of the massive sulfide portion of the deposit.
Keywords:
63-471; Aluminium oxide; Aluminium oxide, standard deviation; Calcium oxide; Calcium oxide, standard deviation; Deep Sea Drilling Project; DRILL; Drilling/drill rig; DSDP; DSDP/ODP/IODP sample designation; Electron microprobe (EMP); Glomar Challenger; Iron oxide, FeO; Iron oxide, FeO, standard deviation; Leg63; Magnesium oxide; Magnesium oxide, standard deviation; Manganese oxide; Manganese oxide, standard deviation; NOAA and MMS Marine Minerals Geochemical Database; NOAA-MMS; North Pacific/FAN; Potassium oxide; Potassium oxide, standard deviation; Replicates; Sample code/label; Silicon dioxide; Sodium oxide; Sodium oxide, standard deviation; Standard deviation; Titanium dioxide; Total
Type:
Dataset
Format:
text/tab-separated-values, 102 data points
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