Orcopampa
Arequipa, southern Peru, Peru
Epithermal depositsAg-Au (Pb)
- Type
- Pb-Ag veins
Central Andean mining district analysed for lead by Macfarlane et al. (1990); Early Miocene veins in Early Miocene rhyolites. Coordinates from Table 2, to the nearest minute. Indicative coordinates.
206Pb/204Pb isotope ratio, no unit Values of the same system
Standard : NIST SRM 981
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| 18.609 | 1 | Pb-Ag vein ore Single analysis, Table 2 (PMP-79). | Macfarlane et al. (1990), Lead isotope provinces of the Central Andes inferred from ores … |
207Pb/204Pb isotope ratio, no unit Values of the same system
Standard : NIST SRM 981
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| 15.641 | 1 | Pb-Ag vein ore Single analysis, Table 2 (PMP-79). | Macfarlane et al. (1990), Lead isotope provinces of the Central Andes inferred from ores … |
208Pb/204Pb isotope ratio, no unit Values of the same system
Standard : NIST SRM 981
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| 38.74 | 1 | Pb-Ag vein ore Single analysis, Table 2 (PMP-79). | Macfarlane et al. (1990), Lead isotope provinces of the Central Andes inferred from ores … |
Deposits of the same type
- Julcani Peru
- San José (Oruro) Bolivia
- Lavisa-Ocurí Bolivia
- Pulacayo Bolivia
- San Cristóbal (Nor Lípez) Bolivia
- Toldos (San Cristóbal district) Bolivia
- Quiruvilca Peru
- Aysén, northern group (El Toqui, Katerfeld) Chile
Cite this page
IsoFind Atlas (2026). Orcopampa, isotope signatures. https://www.isofind.tech/isotopes/en/deposits/orcopampa/ (accessed 2026-10-13).
@misc{isofind2026orcopampaisotopesignatures,
title = {Orcopampa, isotope signatures},
author = {{IsoFind Atlas}},
year = {2026},
url = {https://www.isofind.tech/isotopes/en/deposits/orcopampa/},
note = {Accessed 2026-10-13}
}Updated : 2026-10-13