Longmenchong
Devonian fault-fracture zone, northern Guangxi, China
Other hydrothermalW
- Type
- Brecciated and stockwork tungsten ore in a fracture zone
Brecciated or stockwork tungsten-antimony (fluorite) ore in the Devonian fault-fracture zone of northern Guangxi. According to Zhang (1988), very light wolframite and heavy quartz, formed below 200 °C by meteoric water exchanged with 18O-rich Devonian sediments. Deposit not located: the romanised name in the paper could not be matched to a known mine.
δ18O in ‰ (per mil) Values of the same system
Standard : V-SMOW
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| 16.81 ‰ | 1 | quartz of wolframite-quartz ore One analysis, Table 1. Formation temperature adopted 190 ± 30 °C. | Zhang (1988), Oxygen isotope studies of wolframite in tungsten ore deposits of south Chin… | |
| −2.5 ± 0.42 ‰ | 2 | wolframite of wolframite-quartz ore Published mean and standard deviation from 2 samples, Table 1; individual values not given. Formation temperature adopted 190 ± 30 °C. | Zhang (1988), Oxygen isotope studies of wolframite in tungsten ore deposits of south Chin… |
Deposits of the same type
Cite this page
IsoFind Atlas (2026). Longmenchong, isotope signatures. https://www.isofind.tech/isotopes/en/deposits/longmenchong/ (accessed 2026-10-13).
@misc{isofind2026longmenchongisotopesignatures,
title = {Longmenchong, isotope signatures},
author = {{IsoFind Atlas}},
year = {2026},
url = {https://www.isofind.tech/isotopes/en/deposits/longmenchong/},
note = {Accessed 2026-10-13}
}Updated : 2026-10-13