Banian (Dushan antimony district)
Guizhou, south-eastern Dushan County, Dushan antimony district, China
Other hydrothermalSb
- Type
- Stratabound and breccia-hosted stibnite with calcite gangue in Devonian carbonates and clastics
Medium-sized antimony deposit of the Dushan district (South China antimony belt), controlled by the Banba fault and the secondary Dayuhe fault near the southern axis of the Dushan box anticline; stratabound or lenticular bodies at carbonate-clastic contacts or in breccias, in the upper Songjiaqiao sub-member of the Dushan Formation (Middle Devonian). Early white calcite, pink calcite closely tied to stibnite; calcite, silica and sulfide alteration, abundant vugs in the host rocks. Meteoric fluids at 145 °C on average and 5.7-8.7 wt% NaCl equiv. (Cui et al., 1993; Wang and Jin, 2010). Wang et al. (2012): Sm-Nd isochrons of 128.2 ± 3.2 Ma (white calcite, initial εNd -4.3) and 126.4 ± 2.7 Ma (pink calcite, -6.0), late Yanshanian; δ13C from -1.8 to -0.5 ‰ and δ18O from +12.5 to +14.6 ‰: strong fluid-wall rock interaction. Coordinates not published.
δ13C in ‰ (per mil) Values of the same system
Standard : V-PDB
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| −1.6 ± 0.4 ‰ | −1.8 / −0.9 ‰ | 4 | white calcite (early, not directly tied to stibnite) Mean and standard deviation recalculated from 4 analyses, -1.8 to -0.9 (BN-6-1 -1.8; BN-11 -1.8; BN-21 -1.7; BN-26-1 -0.9). | Wang et al. (2012), Sm-Nd geochronology, REE geochemistry and C and O isotope characteris… |
| −0.5 ± 0.05 ‰ | −0.6 / −0.5 ‰ | 4 | pink calcite (tied to stibnite) Mean and standard deviation recalculated from 4 analyses, -0.6 to -0.5 (BN-6-2 -0.5; BN-9-2 -0.5; BN-17 -0.5; BN-26-2 -0.6). | Wang et al. (2012), Sm-Nd geochronology, REE geochemistry and C and O isotope characteris… |
| 1.5 ‰ | 1 | slightly altered limestone (host rock) Single analysis (BN-30). | Wang et al. (2012), Sm-Nd geochronology, REE geochemistry and C and O isotope characteris… |
δ18O in ‰ (per mil) Values of the same system
Standard : V-SMOW
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| 13.7 ± 0.9 ‰ | 12.5 / 14.6 ‰ | 4 | white calcite (early, not directly tied to stibnite) Mean and standard deviation recalculated from 4 analyses, +12.5 to +14.6 (BN-6-1 +14.6; BN-11 +14.3; BN-21 +13.5; BN-26-1 +12.5). | Wang et al. (2012), Sm-Nd geochronology, REE geochemistry and C and O isotope characteris… |
| 13.5 ± 0.5 ‰ | 12.9 / 14 ‰ | 4 | pink calcite (tied to stibnite) Mean and standard deviation recalculated from 4 analyses, +12.9 to +14 (BN-6-2 +13.7; BN-9-2 +12.9; BN-17 +13.5; BN-26-2 +14). | Wang et al. (2012), Sm-Nd geochronology, REE geochemistry and C and O isotope characteris… |
| 17.5 ‰ | 1 | slightly altered limestone (host rock) Single analysis (BN-30). | Wang et al. (2012), Sm-Nd geochronology, REE geochemistry and C and O isotope characteris… |
εNd(t) in ε units (parts per 10,000) Values of the same system
Standard : CHUR
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| −4.3 ε | 5 | white calcite (isochron initial εNd) Initial εNd of the 128.2 ± 3.2 Ma isochron (MSWD 0.54) on five calcites (BN-6-1, BN-11, BN-14, BN-21, BN-26-1), uncertainty not published. | Wang et al. (2012), Sm-Nd geochronology, REE geochemistry and C and O isotope characteris… | |
| −6 ε | 6 | pink calcite (isochron initial εNd) Initial εNd of the 126.4 ± 2.7 Ma isochron (MSWD 0.68) on six calcites (BN-9-2, BN-17, BN-22, BN-23, BN-26-2, BN-27), uncertainty not published; negative values ascribed to wall-rock interaction. | Wang et al. (2012), Sm-Nd geochronology, REE geochemistry and C and O isotope characteris… |
Deposits of the same type
Cite this page
IsoFind Atlas (2026). Banian (Dushan antimony district), isotope signatures. https://www.isofind.tech/isotopes/en/deposits/banian-district-antimonifere-de-dushan/ (accessed 2026-10-19).
@misc{isofind2026baniandushanantimonydistricti,
title = {Banian (Dushan antimony district), isotope signatures},
author = {{IsoFind Atlas}},
year = {2026},
url = {https://www.isofind.tech/isotopes/en/deposits/banian-district-antimonifere-de-dushan/},
note = {Accessed 2026-10-19}
}Updated : 2026-10-19