Turquoise Ridge (Getchell trend)
Nevada, Humboldt County, Getchell trend, United States
Other hydrothermalAu (As, Tl, Hg, Sb)
- Type
- Carlin-type gold in Paleozoic carbonate and clastic rocks
Underground deposit in the hanging wall of the Getchell fault (NNW strike, 40 to 55° E dip), in strongly deformed Cambrian to Ordovician carbonate and clastic rocks with pillow basalts; main stage of carbonate dissolution and silicification, silicate argillisation and deposition of Tl-rich auriferous arsenian pyrite, quartz, illite and kaolinite (Cail and Cline, 2001; Cassinerio and Muntean, 2011). Tl and Au correlated in the arsenian rims of pyrite (microprobe): first published ε205Tl for a Carlin-type ore (-1.28), ruling out the Paleozoic carbonates (-2.72 to -4.28) as the main metal source (Wickham, 2014). Getchell mine coordinates after Mindat, the property comprising Getchell, Turquoise Ridge and N Zone.
ε205Tl in ε units (parts per 10,000) Values of the same system
Standard : NIST SRM 997
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| −1.28 ± 0.1 ε | 2 | main-stage arsenian pyrite ore (core TU01166) Mean of two sample splits, ± 0.10 deviation from the mean; 8.4 µg/g Tl; interval at 0.784 oz/t gold; Tl in the arsenian rims, absent from pre-ore pyrite cores. | Wickham (2014), Thallium isotope implications for the metalliferous source of Carlin-type… |
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- Terlingua United States
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Cite this page
IsoFind Atlas (2026). Turquoise Ridge (Getchell trend), isotope signatures. https://www.isofind.tech/isotopes/en/deposits/turquoise-ridge-tendance-de-getchell/ (accessed 2026-10-15).
@misc{isofind2026turquoiseridgegetchelltrendis,
title = {Turquoise Ridge (Getchell trend), isotope signatures},
author = {{IsoFind Atlas}},
year = {2026},
url = {https://www.isofind.tech/isotopes/en/deposits/turquoise-ridge-tendance-de-getchell/},
note = {Accessed 2026-10-15}
}Updated : 2026-10-15