Ore Knob (North Carolina)
North Carolina, Ashe County, United States
Volcanogenic massive sulfidesCu-Zn
- Type
- Besshi-type massive sulfides (Cu-Zn) in metasediments
Cu-Zn deposit of Late Proterozoic age in a dominantly clastic metasedimentary terrane, metamorphosed to amphibolite facies. Palmer and Slack (1989, Table 1): tourmaline at -2.19 ‰. Tourmalines of this kind of terrane range from -15.37 to -2.19 ‰ in the article; according to the authors, the boron source (continental crust, entrained seawater, evaporites) matters more than the formation temperature. Indicative coordinates, not published in the article.
δ11B in ‰ (per mil) Values of the same system
Standard : NIST SRM 951
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| −2.19 ‰ | 1 | tourmaline of the massive sulfide or associated tourmalinite Single analysis (11119/29). Uncertainties: 11119/29 -2.19 ± 0.23 ‰ (repeat -1.66 ± 0.61 ‰, not averaged). | Palmer & Slack (1989), Boron isotopic composition of tourmaline from massive sulfide depo… |
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- Logatchev hydrothermal field Océan Atlantique (eaux internationales)
- Lucky Strike hydrothermal field Océan Atlantique (eaux portugaises, Açores)
- Menez Gwen hydrothermal field Océan Atlantique (eaux portugaises, Açores)
Cite this page
IsoFind Atlas (2026). Ore Knob (North Carolina), isotope signatures. https://www.isofind.tech/isotopes/en/deposits/ore-knob-caroline-du-nord/ (accessed 2026-10-19).
@misc{isofind2026oreknobnorthcarolinaisotopesi,
title = {Ore Knob (North Carolina), isotope signatures},
author = {{IsoFind Atlas}},
year = {2026},
url = {https://www.isofind.tech/isotopes/en/deposits/ore-knob-caroline-du-nord/},
note = {Accessed 2026-10-19}
}Updated : 2026-10-19