South Fuchsite Zone (Annidale)
Annidale Belt, southern New Brunswick, Canada
Orogenic goldAu (As, Cu, Pb, Ag, Zn)
- Type
- Orogenic gold in quartz-carbonate veins (Appalachian greenstone belt)
Annidale Group (late Cambrian to Tremadocian, 497 to 481 Ma), Penobscot back-arc between Ganderia and Avalonia, metamorphosed at greenschist facies; auriferous quartz-carbonate veins with chlorite-sericite-fuchsite haloes, ascribed to the Penobscot orogeny and the Stewarton Gabbro (479 ± 2 Ma) according to the authors. East Scotch Settlement Formation, 800 m south of the North Fuchsite Zone (hydrothermal rutile U-Pb 482 ± 16 Ma), itself 2.5 km southwest of Annidale near the historic Old Dick copper mine. Intensely fuchsite-altered mafic volcanics cut by several generations of quartz-carbonate veins, the latest with sphalerite, galena and chalcopyrite with gold; grab samples up to 3.34 g/t Au. Indicative coordinates (about 3 km southwest of Annidale).
δ18O in ‰ (per mil) Values of the same system
Standard : V-SMOW
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| 11.4 ‰ | 1 | auriferous vein quartz Single analysis; with Taylors Brook, comparable to the Clarence Stream deposit, magmatic or metamorphic origin unresolved. | Heidarian et al. (2025), Mineralogy, geochronology, and stable isotope geochemistry of go… |
δ34S in ‰ (per mil) Values of the same system
Standard : V-CDT
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| 8.8 ‰ | 1 | vein galena Single analysis. | Heidarian et al. (2025), Mineralogy, geochronology, and stable isotope geochemistry of go… |
206Pb/204Pb isotope ratio, no unit Values of the same system
Standard : Non précisé dans la publication
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| 18.12 | 1 | vein sulphides, sample 1 (probably galena) Single analysis, the least radiogenic of the study; between the orogene and mantle curves. | Heidarian et al. (2025), Mineralogy, geochronology, and stable isotope geochemistry of go… | |
| 18.23 | 1 | vein sulphides, sample 2 (probably galena) Single analysis. | Heidarian et al. (2025), Mineralogy, geochronology, and stable isotope geochemistry of go… |
207Pb/204Pb isotope ratio, no unit Values of the same system
Standard : Non précisé dans la publication
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| 15.53 | 1 | vein sulphides, sample 1 (probably galena) Single analysis, the least radiogenic of the study; between the orogene and mantle curves. | Heidarian et al. (2025), Mineralogy, geochronology, and stable isotope geochemistry of go… | |
| 15.55 | 1 | vein sulphides, sample 2 (probably galena) Single analysis. | Heidarian et al. (2025), Mineralogy, geochronology, and stable isotope geochemistry of go… |
208Pb/204Pb isotope ratio, no unit Values of the same system
Standard : Non précisé dans la publication
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| 37.58 | 1 | vein sulphides, sample 1 (probably galena) Single analysis, the least radiogenic of the study; between the orogene and mantle curves. | Heidarian et al. (2025), Mineralogy, geochronology, and stable isotope geochemistry of go… | |
| 37.78 | 1 | vein sulphides, sample 2 (probably galena) Single analysis. | Heidarian et al. (2025), Mineralogy, geochronology, and stable isotope geochemistry of go… |
Deposits of the same type
- East Scotch Settlement - BP Canada
- Sheba Pit Canada
- Taylors Brook Canada
- Devil Pike Brook (Golden Pike) Canada
- Henderson Settlement Canada
- Grant Brook West Canada
- Moose River Canada
- Pascalis Canada
Cite this page
IsoFind Atlas (2026). South Fuchsite Zone (Annidale), isotope signatures. https://www.isofind.tech/isotopes/en/deposits/south-fuchsite-zone-annidale/ (accessed 2026-10-14).
@misc{isofind2026southfuchsitezoneannidaleisot,
title = {South Fuchsite Zone (Annidale), isotope signatures},
author = {{IsoFind Atlas}},
year = {2026},
url = {https://www.isofind.tech/isotopes/en/deposits/south-fuchsite-zone-annidale/},
note = {Accessed 2026-10-14}
}Updated : 2026-10-14