Oruro Department (unspecified origin)
Oruro Department, Bolivian tin belt, Bolivia
PorphyriesSn (Ag)
- Type
- Subvolcanic tin porphyries and veins
Collection cassiterite and stannites labelled "Oruro" with no specified deposit (Yao et al., 2018). Coordinates of the city of Oruro. Indicative coordinates.
δ124Sn in ‰ (per mil) Values of the same system
Standard : NIST SRM 3161a
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| 0.08 ‰ | 1 | early cassiterite Single analysis, Table 1 (BOL 06). | Yao et al. (2018), Sn-isotope fractionation as a record of hydrothermal redox reactions, … | |
| −1.28 ± 0.49 ‰ | −1.83 / −0.88 ‰ | 3 | late stannite Mean and standard deviation recalculated from 3 samples, Table 1 (BOL 18 to 20). | Yao et al. (2018), Sn-isotope fractionation as a record of hydrothermal redox reactions, … |
206Pb/204Pb isotope ratio, no unit Values of the same system
Standard : NIST SRM 981
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| 18.581 | 1 | porphyry tin ore Single analysis, Table 2 (PMB-2). Porphyry tin sample from Oruro (17°55' S, 67°05' W) in a late Tertiary stock; the precise mine is not given. | 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 |
|---|---|---|---|---|
| 15.661 | 1 | porphyry tin ore Single analysis, Table 2 (PMB-2). Porphyry tin sample from Oruro (17°55' S, 67°05' W) in a late Tertiary stock; the precise mine is not given. | 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 |
|---|---|---|---|---|
| 38.877 | 1 | porphyry tin ore Single analysis, Table 2 (PMB-2). Porphyry tin sample from Oruro (17°55' S, 67°05' W) in a late Tertiary stock; the precise mine is not given. | Macfarlane et al. (1990), Lead isotope provinces of the Central Andes inferred from ores … |
Deposits of the same type
- Llallagua Bolivia
- Potosí Department (unspecified origin) Bolivia
- Cerro Rico de Potosí Bolivia
- Chuquicamata Chile
- Escondida Chile
- El Teniente Chile
- Cañariaco Peru
- Climax United States
Cite this page
IsoFind Atlas (2026). Oruro Department (unspecified origin), isotope signatures. https://www.isofind.tech/isotopes/en/deposits/departement-d-oruro-provenance-non-precisee/ (accessed 2026-10-13).
@misc{isofind2026orurodepartmentunspecifiedori,
title = {Oruro Department (unspecified origin), isotope signatures},
author = {{IsoFind Atlas}},
year = {2026},
url = {https://www.isofind.tech/isotopes/en/deposits/departement-d-oruro-provenance-non-precisee/},
note = {Accessed 2026-10-13}
}Updated : 2026-10-13