Miaolong
Guizhou, Sandu-Danzhai Au-Sb-Hg belt (Qiannan Depression), China
Other hydrothermalAu-Sb (As)
- Type
- Carlin-type Au-Sb: early stibnite overprinted by invisible gold in arsenian pyrite
About 7 t of gold at 5.31 g/t, 4662 t of Sb and 7862 t of As, in argillaceous limestones and breccias of the Sandu Formation (Middle to Upper Cambrian); 34 gold orebodies as veins, lenses and pods along N-S and E-W faults, eight of them with Sb (0.78 to 10.43 %); orebody No. 28 the richest. Xie et al. (2025): Sb mineralisation (stibnite, quartz, calcite, native antimony, chalcostibite) predates the Carlin-type gold (arsenian pyrite and arsenopyrite), which rims it. Very heavy sulfur in all sulfides (δ34S of +17.6 to +39.6 ‰): sulfur from the Cambrian strata by thermochemical sulfate reduction (evaporites at +36 to +38 ‰), unlike the Youjiang Basin Carlin-type deposits (about 0 ‰). Coordinates not published.
δ34S in ‰ (per mil) Values of the same system
Standard : V-CDT
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| 32.25 ± 4.63 ‰ | 24.64 / 39.61 ‰ | 14 | pre-ore pyrite (sections ML-28-47 and ML-28-50) Mean and standard deviation recalculated from 14 analyses, +24.64 to +39.61 (#1 +24.88; #2 +24.64; #3 +32.45; #4 +35.03; #5 +35.77; #6 +32.78; #7 +27.52; #8 +39.57; #9 +39.61; #10 +33.23; #11 +33.90; #12 +32.39; #13 +29.44; #14 +30.31); published median of +32.61 ‰; earlier Fe-rich hydrothermal event; spots numbered in Table 1 order. | Xie et al. (2025), Antimony mineralization superimposed by late gold mineralization: A ca… |
| 23.65 ± 2.73 ‰ | 17.81 / 28.37 ‰ | 12 | gold-bearing arsenian pyrite (rims on pre-ore pyrite) Mean and standard deviation recalculated from 12 analyses, +17.81 to +28.37 (#1 +24.50; #2 +22.99; #3 +24.18; #4 +23.96; #5 +20.31; #6 +17.81; #7 +23.52; #8 +24.11; #9 +28.37; #10 +26.81; #11 +22.46; #12 +24.82); published median of +24.03 ‰; spots #7 and #8 with traces of pre-ore pyrite; spot larger than the fine zoning. | Xie et al. (2025), Antimony mineralization superimposed by late gold mineralization: A ca… |
| 20.74 ± 1.67 ‰ | 17.74 / 23.21 ‰ | 16 | gold-bearing arsenopyrite (sections ML-28-42, -47 and -50) Mean and standard deviation recalculated from 16 analyses, +17.74 to +23.21 (#1 +22.31; #2 +23.21; #3 +22.81; #4 +19.87; #5 +19.30; #6 +21.88; #7 +19.70; #8 +17.90; #9 +17.74; #10 +21.28; #11 +22.69; #12 +20.58; #13 +21.04; #14 +21.36; #15 +19.22; #16 +20.89); published median of +20.96 ‰. | Xie et al. (2025), Antimony mineralization superimposed by late gold mineralization: A ca… |
| 18.74 ± 0.78 ‰ | 17.56 / 19.81 ‰ | 17 | stibnite of the Sb mineralisation Mean and standard deviation recalculated from 17 analyses, +17.56 to +19.81 (ML-28-42 #1 +19.44; ML-28-42 #2 +19.56; ML-28-42 #3 +19.70; ML-28-42 #4 +19.56; ML-28-42 #5 +19.53; ML-28-42 #6 +19.81; ML-28-42 #7 +19.53; ML-28-47 #1 +18.06; ML-28-47 #2 +18.61; ML-28-47 #3 +18.72; ML-28-47 #4 +18.00; ML-28-47 #5 +18.25; ML-28-47 #6 +17.94; ML-28-47 #7 +18.30; ML-28-47 #8 +17.95; ML-28-47 #9 +17.56; ML-28-47 #10 +18.07); published median of +18.61 ‰; narrow range, ML-28-42 (+19.44 to +19.81 ‰) heavier than ML-28-47 (+17.56 to +18.72 ‰). | Xie et al. (2025), Antimony mineralization superimposed by late gold mineralization: A ca… |
Deposits of the same type
Cite this page
IsoFind Atlas (2026). Miaolong, isotope signatures. https://www.isofind.tech/isotopes/en/deposits/miaolong/ (accessed 2026-10-16).
@misc{isofind2026miaolongisotopesignatures,
title = {Miaolong, isotope signatures},
author = {{IsoFind Atlas}},
year = {2026},
url = {https://www.isofind.tech/isotopes/en/deposits/miaolong/},
note = {Accessed 2026-10-16}
}Updated : 2026-10-16