Lung Luong
North-east Vietnam, Lo Gam domain, Lang Vai district (14 km from Lang Vai), Viêt Nam
Other hydrothermalSb-Pb
- Type
- Distal Sb-Pb of an intrusion-related gold system
Lang Vai gold district (Lo Gam domain, north-east Vietnam; proven reserves over 13.5 t Au, 186.8 t Ag and 46 t Sb), an intrusion-related gold system according to the authors: mineralisation at about 240-236 Ma, close to the Phia Bioc granite complex (254-245 Ma). Host rocks: Devonian limestones and sericite-carbonate shales (Mia Le Formation). Sequence: arsenopyrite-pyrite-gold-sphalerite, Bi-bearing Pb-Sb sulfosalts, Bi-free Pb-Sb sulfosalts, Sb sulfosalts, stibnite-berthierite-native Sb, Pb-rich sulfosalts (distal). Initial hot, reduced (CO2-CH4)-H2O-NaCl fluid, then cooler CO2-H2O-NaCl; boiling and depth of 12.9 to 15.2 km. Lung Luong: Lung Luong mine (Sb-Pb bodies) and Pu Bo mine (lead with minor antimony), zones up to 600-700 m as veins and lenses in the Mia Le Formation; pyrite, sphalerite, boulangerite, heteromorphite, bournonite. Nevolko et al. (2019): sulfides from +1.8 to +6.5 ‰, heavier than at Lang Vai through host-rock interaction; fluid at 185-240 °C, 5.5-9.5 wt% NaCl equiv., CO2-rich. Coordinates read from the district geological map (Fig. 2, frame 105°16'-105°28' E, 22°10'-22°23' N), indicative.
δ34S in ‰ (per mil) Values of the same system
Standard : V-CDT
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| 3.5 ‰ | 1 | sphalerite Single analysis (VR-7/3). | Nevolko et al. (2019), Origin of the intrusion-related Lang Vai gold-antimony district (N… | |
| 3.7 ± 2.5 ‰ | 1.8 / 6.5 ‰ | 3 | Pb-Sb sulfosalts (distal Pb-Sb stage) Mean and standard deviation recalculated from 3 analyses, +1.8 to +6.5 (VR-7/4 +1.8; LL-02 +2.7; LL-01 +6.5). Published mean of +3.6 ‰. | Nevolko et al. (2019), Origin of the intrusion-related Lang Vai gold-antimony district (N… |
δ13C in ‰ (per mil) Values of the same system
Standard : V-PDB
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| −0.2 ‰ | 1 | hydrothermal calcite Single analysis (VR-7/3). | Nevolko et al. (2019), Origin of the intrusion-related Lang Vai gold-antimony district (N… |
δ18O in ‰ (per mil) Values of the same system
Standard : V-SMOW
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| 19 ‰ | 1 | hydrothermal calcite Single analysis (VR-7/3). | Nevolko et al. (2019), Origin of the intrusion-related Lang Vai gold-antimony district (N… |
206Pb/204Pb isotope ratio, no unit Values of the same system
Standard : NIST SRM 981
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| 18.6944 | 1 | boulangerite Single analysis (VR-7/4). ± 0.0004 (2σ). Two-end-member mixing, radiogenic and unradiogenic, on the plumbotectonic diagram according to the authors. | Nevolko et al. (2019), Origin of the intrusion-related Lang Vai gold-antimony district (N… |
207Pb/204Pb isotope ratio, no unit Values of the same system
Standard : NIST SRM 981
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| 15.7632 | 1 | boulangerite Single analysis (VR-7/4). ± 0.0003 (2σ). Two-end-member mixing, radiogenic and unradiogenic, on the plumbotectonic diagram according to the authors. | Nevolko et al. (2019), Origin of the intrusion-related Lang Vai gold-antimony district (N… |
208Pb/204Pb isotope ratio, no unit Values of the same system
Standard : NIST SRM 981
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| 38.9007 | 1 | boulangerite Single analysis (VR-7/4). ± 0.0007 (2σ). Two-end-member mixing, radiogenic and unradiogenic, on the plumbotectonic diagram according to the authors. | Nevolko et al. (2019), Origin of the intrusion-related Lang Vai gold-antimony district (N… |
Deposits of the same type
- Lang Vai Viêt Nam
- Khoun Puc Viêt Nam
- Na Bop-Pu Sap Viêt Nam
- Binh Do Viêt Nam
- Lanmuchang China
- Shuiyindong China
- Damingshan (tungsten) China
- Tongkeng (Changpo-Tongkeng) China
Cite this page
IsoFind Atlas (2026). Lung Luong, isotope signatures. https://www.isofind.tech/isotopes/en/deposits/lung-luong/ (accessed 2026-10-19).
@misc{isofind2026lungluongisotopesignatures,
title = {Lung Luong, isotope signatures},
author = {{IsoFind Atlas}},
year = {2026},
url = {https://www.isofind.tech/isotopes/en/deposits/lung-luong/},
note = {Accessed 2026-10-19}
}Updated : 2026-10-19