Blackbird district (Idaho)
Idaho, Lemhi County, United States
OtherCo-Cu-Au
- Type
- Stratabound Cu-Co-Au in metasediments
Co-Cu-Au deposit of Middle Proterozoic age in a dominantly clastic metasedimentary terrane, metamorphosed to amphibolite facies. Palmer and Slack (1989, Table 1): tourmaline at -8.14 ‰. 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 |
|---|---|---|---|---|
| −8.14 ‰ | 1 | tourmaline of the massive sulfide or associated tourmalinite Single analysis (BB-NW-2271). Uncertainties: BB-NW-2271 -8.14 ± 0.30 ‰. | Palmer & Slack (1989), Boron isotopic composition of tourmaline from massive sulfide depo… |
Deposits of the same type
- Leduc Formation lithium brines (Alberta basin) Canada
- Searles Lake United States
- Kramer (Boron) United States
- Salton Sea geothermal field United States
- Smackover Formation brines (East Texas) United States
- Haynesville Shale produced water United States
- Webster-Addie (Democrat) United States
- Ahles mine United States
Cite this page
IsoFind Atlas (2026). Blackbird district (Idaho), isotope signatures. https://www.isofind.tech/isotopes/en/deposits/district-de-blackbird-idaho/ (accessed 2026-10-19).
@misc{isofind2026blackbirddistrictidahoisotope,
title = {Blackbird district (Idaho), isotope signatures},
author = {{IsoFind Atlas}},
year = {2026},
url = {https://www.isofind.tech/isotopes/en/deposits/district-de-blackbird-idaho/},
note = {Accessed 2026-10-19}
}Updated : 2026-10-19