Hydrogenetic Fe-Mn deposit (crust), Magellan Seamounts (No. 0327)

Pacific Ocean

Other media

Type: Other medium

Hydrogenetic ferromanganese crust sampled at 2149.5 m water depth; poorly crystalline 10 Å vernadite (total scattering and TEM, Lee and Xu, 2024), BET surface 376 to 421 m²/g, 17.89 % Mn and 11.10 % Fe, rich in Co, Ni and Cu. ε205Tl of +10.13 comparable to other hydrogenetic crusts, although 97 % of Tl is monovalent (XANES): post-depositional transformation without re-equilibration with seawater. Placed in artificial seawater, it quickly loses heavy Tl (Wang et al., 2026). Coordinates from Table 1.

ε205Tl in ε units (parts per 10,000) Values of the same system

Standard : NIST SRM 997

Value	Range	n	Mineral or matrix	Source
10.13 ± 0.15 ε			Value before the experiment, Table S1; ± 0.15 (2SD of repeat measurements), +10.1 ± 0.3 in the text; 91.14 ppm Tl in Table S1, 102 µg/g in the text.	Wang et al. (2026), Thallium isotopic fractionation during adsorption onto natural mangan…

Deposits of the same type

Cite this page

IsoFind Atlas (2026). Hydrogenetic Fe-Mn deposit (crust), Magellan Seamounts (No. 0327), isotope signatures. https://www.isofind.tech/isotopes/en/sites/depot-fe-mn-hydrogenetique-croute-monts-sous-marins-de-magellan-no-0327/ (accessed 2026-10-16).

@misc{isofind2026hydrogeneticfemndepositcrustm,
  title = {Hydrogenetic Fe-Mn deposit (crust), Magellan Seamounts (No. 0327), isotope signatures},
  author = {{IsoFind Atlas}},
  year = {2026},
  url = {https://www.isofind.tech/isotopes/en/sites/depot-fe-mn-hydrogenetique-croute-monts-sous-marins-de-magellan-no-0327/},
  note = {Accessed 2026-10-16}
}

Updated : 2026-10-16