Edanggang
Qinghai, Tianjun County, Quanji Massif (Chaibeiyuan Li-Be belt), China
Magmatic (Ni-Cu-PGE, carbonatites)Li-Be (Ta)
- Type
- Li-Be granitic pegmatites
Small deposit of tourmaline-, spodumene- and beryl-bearing pegmatites (reserves of 158.94 t Li2O, 555.23 t BeO and 4.32 t Ta2O5), in a belt where Li-Be mineralization is dated to the Late Triassic (about 217 to 212 Ma). Zhou et al. (2026): magmatic tourmaline from -14.13 to -10.40 ‰, boron from the pegmatite magma.
δ11B in ‰ (per mil) Values of the same system
Standard : NIST SRM 951
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| −12.63 ± 0.66 ‰ | −14.13 / −12.1 ‰ | 10 | fine tourmaline of tourmaline bands in pegmatites (Tur 2) Mean and standard deviation recalculated from 10 analyses, -14.13 to -12.10 (EDG8-04-B5-1 -12.25; EDG8-04-B5-2 -12.38; EDG8-04-B5-3 -12.48; EDG8-04-B5-4 -12.63; EDG8-04-B5-5 -14.13; EDG8-04-B5-6 -13.53; EDG13-01-B2-9 -12.26; EDG13-01-B2-10 -12.37; EDG13-01-B5-5 -12.10; EDG13-01-B5-6 -12.18). | Zhou et al. (2026), In-situ Elemental and Boron Isotopic Geochemistry of Tourmalines from… |
| −11.77 ± 0.62 ‰ | −12.3 / −10.4 ‰ | 12 | coarse tourmaline at pegmatite margins (Tur 1) Mean and standard deviation recalculated from 12 analyses, -12.30 to -10.40 (EDG13-01-B2-1 c -11.80; EDG13-01-B2-2 b -11.96; EDG13-01-B2-3 c -12.04; EDG13-01-B2-4 b -12.00; EDG13-01-B2-5 b -12.28; EDG13-01-B2-6 b -12.15; EDG13-01-B2-7 c -12.21; EDG13-01-B2-8 c -12.30; EDG13-01-B5-1 c -11.80; EDG13-01-B5-2 b -10.40; EDG13-01-B5-3 c -10.62; EDG13-01-B5-4 b -11.63). Cores (c) and rims (b), without clear isotopic zoning. | Zhou et al. (2026), In-situ Elemental and Boron Isotopic Geochemistry of Tourmalines from… |
Deposits of the same type
- Bayan Obo China
- Norilsk-Talnakh Russia
- Bushveld, Merensky Reef South Africa
- Bushveld, UG2 chromitite South Africa
- Bushveld, Platreef South Africa
- Sudbury Canada
- Voisey's Bay Canada
- Rössing Namibia
Cite this page
IsoFind Atlas (2026). Edanggang, isotope signatures. https://www.isofind.tech/isotopes/en/deposits/edanggang/ (accessed 2026-10-20).
@misc{isofind2026edanggangisotopesignatures,
title = {Edanggang, isotope signatures},
author = {{IsoFind Atlas}},
year = {2026},
url = {https://www.isofind.tech/isotopes/en/deposits/edanggang/},
note = {Accessed 2026-10-20}
}Updated : 2026-10-20