Florida Canyon
Bongará area, Amazonas (northern Peru), Peru
Mississippi Valley TypeZn-Pb
- Type
- Mississippi Valley-type (MVT)
Stratabound Zn-Pb mineralisation in 2 to 5 m layers over about 2 × 3 km, in dissolution breccias of Chambará Formation carbonates (Pucará Group, Late Triassic-Jurassic), emplaced during the Peruvian orogeny (Late Cretaceous). Sulfur derives from thermochemical reduction of dissolved sulfate (Cretaceous seawater, evaporites of the Chambará-Condorsinga or Sarayaquillo formations). Organic, possibly bacterial, sulfur is added: values lower and more scattered than at Florcita. About 13 km north-west of Pedro Ruiz. Indicative coordinates.
δ34S in ‰ (per mil) Values of the same system
Standard : V-CDT
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| 0.1 ± 6.5 ‰ | −10.3 / 7.2 ‰ | 8 | pre-ore pyrite Published mean, standard deviation and range (Table 1), 8 in situ analyses; median 2.2 ‰. | Basuki et al. (2008), Sulfur isotope evidence for thermochemical reduction of dissolved s… |
| 0.6 ± 1.1 ‰ | −0.4 / 1.8 ‰ | 3 | ore-stage pyrite Published mean, standard deviation and range (Table 1), 3 in situ analyses; median 0.5 ‰. | Basuki et al. (2008), Sulfur isotope evidence for thermochemical reduction of dissolved s… |
| 1 ± 4.8 ‰ | −13.7 / 14.2 ‰ | 34 | sphalerite 1 Published mean, standard deviation and range (Table 1), 34 in situ analyses; median 1.9 ‰. 30 of 34 values between -6 and +6 ‰; variation from -5.4 to +5.0 ‰ within one breccia sample (Raquel). | Basuki et al. (2008), Sulfur isotope evidence for thermochemical reduction of dissolved s… |
| 0.4 ± 3 ‰ | −4.7 / 5.4 ‰ | 8 | galena Published mean, standard deviation and range (Table 1), 8 in situ analyses; median 1.0 ‰. | Basuki et al. (2008), Sulfur isotope evidence for thermochemical reduction of dissolved s… |
| 5.2 ± 6.9 ‰ | −0.3 / 17.6 ‰ | 6 | sphalerite 2 (pale yellow, late) Published mean, standard deviation and range (Table 1), 6 in situ analyses; median 2.4 ‰. Formed in a system closed to sulfate according to the authors. | Basuki et al. (2008), Sulfur isotope evidence for thermochemical reduction of dissolved s… |
Deposits of the same type
- Florcita Peru
- San Vicente Peru
- Central and East Tennessee MVT United States
- Southern Appalachians MVT United States
- Northern Arkansas district United States
- Tri-State district United States
- Upper Mississippi Valley district United States
- Gays River Canada
Cite this page
IsoFind Atlas (2026). Florida Canyon, isotope signatures. https://www.isofind.tech/isotopes/en/deposits/florida-canyon/ (accessed 2026-10-13).
@misc{isofind2026floridacanyonisotopesignature,
title = {Florida Canyon, isotope signatures},
author = {{IsoFind Atlas}},
year = {2026},
url = {https://www.isofind.tech/isotopes/en/deposits/florida-canyon/},
note = {Accessed 2026-10-13}
}Updated : 2026-10-13