Weizhai (Dushan antimony district)
Guizhou, Dushan antimony district, China
Other hydrothermalSb
- Type
- Fault-controlled stibnite veinlets and breccias in argillaceous limestones
Deposit of 21,000 t Sb at 4.18 % in Lower Silurian argillaceous limestones and siltstones, Dushan district (over 30 deposits, 287,000 t Sb), South China antimony belt. Columnar stibnite in breccias and veins, with quartz and carbonates. Three carbonate generations: pre-ore Fe-Mn dolomite (Dol-I), syn-ore calcite (Cal-II) and post-ore calcite (Cal-III). Luo et al. (2020): in situ calcite U-Pb ages of 115.3 ± 1.5 Ma (Cal-II, ore age, Early Cretaceous) and 60.0 ± 0.9 Ma (Cal-III); 87Sr/86Sr of 0.7147 to 0.7187, like the Mesoproterozoic Banxi Group rocks. Coordinates not published.
δ13C in ‰ (per mil) Values of the same system
Standard : V-PDB
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| −2.3 ± 0.6 ‰ | −2.8 / −1.9 ‰ | 2 | pre-ore dolomite (Dol-I) Mean and standard deviation recalculated from 2 analyses, -2.8 to -1.9 (WZ05-4 -1.9; WZ05-5 -2.8). | Luo et al. (2020), In situ U-Pb Dating of Calcite from the South China Antimony Metalloge… |
| −0.5 ± 0.1 ‰ | −0.6 / −0.4 ‰ | 2 | syn-ore calcite (Cal-II) Mean and standard deviation recalculated from 2 analyses, -0.6 to -0.4 (WZ05-2 -0.4; WZ05-3 -0.6). | Luo et al. (2020), In situ U-Pb Dating of Calcite from the South China Antimony Metalloge… |
| 0.1 ± 0.5 ‰ | −0.3 / 0.4 ‰ | 2 | post-ore calcite (Cal-III) Mean and standard deviation recalculated from 2 analyses, -0.3 to +0.4 (WZ05-1 -0.3; WZ02 +0.4); WZ02 has no stage, assigned to Cal-III from the table layout; the text counts it with the ore calcite. | Luo et al. (2020), In situ U-Pb Dating of Calcite from the South China Antimony Metalloge… |
δ18O in ‰ (per mil) Values of the same system
Standard : V-SMOW
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| 18.1 ± 0.4 ‰ | 17.8 / 18.4 ‰ | 2 | pre-ore dolomite (Dol-I) Mean and standard deviation recalculated from 2 analyses, +17.8 to +18.4 (WZ05-4 +17.8; WZ05-5 +18.4). | Luo et al. (2020), In situ U-Pb Dating of Calcite from the South China Antimony Metalloge… |
| 17.3 ± 0.1 ‰ | 17.2 / 17.4 ‰ | 2 | syn-ore calcite (Cal-II) Mean and standard deviation recalculated from 2 analyses, +17.2 to +17.4 (WZ05-2 +17.2; WZ05-3 +17.4). | Luo et al. (2020), In situ U-Pb Dating of Calcite from the South China Antimony Metalloge… |
| 15.2 ± 1.2 ‰ | 14.4 / 16.1 ‰ | 2 | post-ore calcite (Cal-III) Mean and standard deviation recalculated from 2 analyses, +14.4 to +16.1 (WZ05-1 +16.1; WZ02 +14.4); WZ02 has no stage, assigned to Cal-III from the table layout; the text counts it with the ore calcite. | Luo et al. (2020), In situ U-Pb Dating of Calcite from the South China Antimony Metalloge… |
87Sr/86Sr isotope ratio, no unit Values of the same system
Standard : NIST SRM 987
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| 0.718413 ± 0.000339 | 0.718173 / 0.718653 | 2 | pre-ore dolomite (Dol-I) Mean and standard deviation recalculated from 2 analyses, 0.718173 to 0.718653 (WZ05-4 0.718653; WZ05-5 0.718173); published mean of 0.718413. | Luo et al. (2020), In situ U-Pb Dating of Calcite from the South China Antimony Metalloge… |
| 0.715714 ± 0.001299 | 0.714795 / 0.716632 | 2 | syn-ore calcite (Cal-II) Mean and standard deviation recalculated from 2 analyses, 0.714795 to 0.716632 (WZ05-2 0.714795; WZ05-3 0.716632); published mean of 0.715714; well above Phanerozoic marine carbonates (0.7068-0.7092): fluid that passed through radiogenic rocks (Banxi Group) according to the authors. | Luo et al. (2020), In situ U-Pb Dating of Calcite from the South China Antimony Metalloge… |
| 0.714688 ± 0.000007 | 1 | post-ore calcite (Cal-III) Single analysis; sample WZ05-1. | Luo et al. (2020), In situ U-Pb Dating of Calcite from the South China Antimony Metalloge… |
Deposits of the same type
Cite this page
IsoFind Atlas (2026). Weizhai (Dushan antimony district), isotope signatures. https://www.isofind.tech/isotopes/en/deposits/weizhai-district-antimonifere-de-dushan/ (accessed 2026-10-16).
@misc{isofind2026weizhaidushanantimonydistrict,
title = {Weizhai (Dushan antimony district), isotope signatures},
author = {{IsoFind Atlas}},
year = {2026},
url = {https://www.isofind.tech/isotopes/en/deposits/weizhai-district-antimonifere-de-dushan/},
note = {Accessed 2026-10-16}
}Updated : 2026-10-16