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Table 1 Chemistry of low temperature vent fluid sample from Franklin Seamount, Woodlark Basin. All data from Binns et al.5

From: Microbial and hydrothermal aspects of ferric oxyhydroxides and ferrosic hydroxides: the example of Franklin Seamount, Western Woodlark Basin, Papua New Guinea

 

Vent fluid

Ambient seawater

T/°C

20–30

2.1

pH

6.26

7.57

Alkalinity/u equiv l-1

3.08

2.86–2.91

Conc./mM kg-1

  

Mg

51.96

52.66–52.99

Ca

10.47

9.85–9.87

Si

0.33

0.117–0.118

Li

0.036

0.026

Mn

0.010

2.5 × 10-6-4.5 × 10-6

Fe

0.038

4 × 10-6

Cl

532.9

530–531

H2S

NDa

ND

NO3

23.8

35.8–37.7

NO2

<0.1

ND

NH4

7.5

ND

PO4

0.78

2.6–2.9

Conc./μM kg-1

  

Ni

0.014

0.006

Cu

0.78

0.012–0.046

Zn

0.38

ND

Conc./nM kg-1

  

Ag

0.23

0.09–0.18

Pb

1.2

0.38–0.48

  1. aND, not determined.
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Geochemical Transactions

ISSN: 1467-4866

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