Howell Farm mine
New Jersey Highlands, United States
OtherFe
- Type
- Silicate-poor magnetite hosted in marbles
Small magnetite deposit in Mesoproterozoic marbles of the New Jersey Highlands, metamorphosed in Grenvillian times. The authors see Fe oxides and hydroxides brought by a back-arc submarine hydrothermal system (1.3 to 1.25 Ga), the same as for the zinc at Franklin and Sterling Hill. Coordinates from the publication.
δ13C in ‰ (per mil) Values of the same system
Standard : V-PDB
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| −0.15 ± 0.71 ‰ | −0.65 / 0.35 ‰ | 2 | calcite of the ore-hosting marble Mean and standard deviation recalculated from 2 samples, Table 3. | Peck et al. (2009), Stable isotope and petrologic evidence for the origin of regional mar… |
δ18O in ‰ (per mil) Values of the same system
Standard : V-SMOW
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| 16.38 ± 0.36 ‰ | 16.13 / 16.64 ‰ | 2 | calcite of the ore-hosting marble Mean and standard deviation recalculated from 2 samples, Table 3. | Peck et al. (2009), Stable isotope and petrologic evidence for the origin of regional mar… |
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Cite this page
IsoFind Atlas (2026). Howell Farm mine, isotope signatures. https://www.isofind.tech/isotopes/en/deposits/mine-howell-farm/ (accessed 2026-10-13).
@misc{isofind2026howellfarmmineisotopesignatur,
title = {Howell Farm mine, isotope signatures},
author = {{IsoFind Atlas}},
year = {2026},
url = {https://www.isofind.tech/isotopes/en/deposits/mine-howell-farm/},
note = {Accessed 2026-10-13}
}Updated : 2026-10-13