Copucha
Antofagasta Region, Sierra Gorda district, Chile
PorphyriesCu
- Type
- Porphyry copper
Porphyry copper deposit of about 60 Ma in the Sierra Gorda district (Iriarte, 1993). Tornos et al. (2012): tourmaline from -3.1 to -1.4 ‰, within the range of melt inclusions from the El Salvador porphyry.
δ11B in ‰ (per mil) Values of the same system
Standard : NIST SRM 951
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| −2.2 ± 0.7 ‰ | −3.1 / −1.4 ‰ | 5 | porphyry tourmaline (COPU-1) Mean and standard deviation recalculated from 5 analyses, -3.1 to -1.4 (1 -3.1; 2 -2.1; 3 -2.6; 4 -1.9; 5 -1.4). The text announces eight analyses, the table gives only five. | Tornos et al. (2012), The boron isotope geochemistry of tourmaline-rich alteration in the… |
Deposits of the same type
- Escondida Chile
- Chuquicamata Chile
- Bingham Canyon United States
- Mikheevskoe Russia
- Northparkes Australia
- Grasberg Indonesia
- Henderson United States
- Climax United States
Cite this page
IsoFind Atlas (2026). Copucha, isotope signatures. https://www.isofind.tech/isotopes/en/deposits/copucha/ (accessed 2026-10-20).
@misc{isofind2026copuchaisotopesignatures,
title = {Copucha, isotope signatures},
author = {{IsoFind Atlas}},
year = {2026},
url = {https://www.isofind.tech/isotopes/en/deposits/copucha/},
note = {Accessed 2026-10-20}
}Updated : 2026-10-20