Qiubudong

Hebei, Pingshan (Fuping ore cluster, Taihang Mountains, central North China Craton), China

Other hydrothermalAg (Pb, Zn)

Type: Silver in a cryptoexplosive breccia pipe

Two km north-west of Qiubudong village, south-west of the Mapeng pluton: elliptical breccia pipe (200 × 150 m) at the intersection of NE and NW fractures, in leptites of the Fuping Complex, with quartz porphyry dykes (107.95 ± 0.87 Ma by zircon U-Pb); native silver, electrum and argentite, grade 59 to 66 g/t. Five stages: magnetite-quartz, biotite-quartz, quartz-pyrite (III), quartz-polymetallic sulfides (IV) and quartz-carbonate. Sun et al. (2014): pyrite Rb-Sr isochron at 102.04 ± 0.61 Ma, near-mantle sulfur, lower-crust lead, 5 to 20 % mantle helium. Indicative coordinates: read on the graticule of Figure 1c of Sun et al. (2014), to within about 2 km.

δ34S in ‰ (per mil) Values of the same system

Standard : V-CDT

Value	Range	n	Mineral or matrix	Source
1.6 ± 1.1 ‰	0.5 / 3.4 ‰	8	stage III and IV pyrite Mean and standard deviation recalculated from 8 analyses, +0.5 to +3.4 (ZK3101-8 (stage IV) +3.4; ZK3101-13 (stage IV) +0.6; ZK3101-14 (stage IV) +0.8; ZK3201-8 (stage IV) +2.6; ZK3201-10 (stage III) +2.5; ZK3204-20 (stage III) +1.3; ZK3204-23 (stage III) +0.5; ZK3302-20 (stage III) +1.0). Published means +1.9 ‰ (stage IV) and +1.3 ‰ (stage III). ZK3101-13 is a pyrite in Table 1 and a galena in Table 2.	Sun et al. (2014), Isotope geochemistry and geochronology of the Qiubudong silver deposit…

206Pb/204Pb isotope ratio, no unit Values of the same system

Standard : Non précisé dans la publication

Value	Range	n	Mineral or matrix	Source
15.876 ± 0.081	15.799 / 16.049	8	stage III and IV pyrite and galena Mean and standard deviation recalculated from 8 analyses, 15.799 to 16.049 (ZK3101-8 (pyrite, stage IV) 15.805; ZK3101-13 (galena, stage IV) 15.799; ZK3201-8 (pyrite, stage IV) 15.848; ZK3201-10 (pyrite, stage III) 15.911; ZK3204-3 (galena, stage IV) 15.837; ZK3204-20 (pyrite, stage III) 16.049; ZK3204-23 (pyrite, stage III) 15.846; ZK3302-20 (pyrite, stage III) 15.910). Unradiogenic lead, from the lower crust according to the authors.	Sun et al. (2014), Isotope geochemistry and geochronology of the Qiubudong silver deposit…

207Pb/204Pb isotope ratio, no unit Values of the same system

Standard : Non précisé dans la publication

Value	Range	n	Mineral or matrix	Source
15.188 ± 0.035	15.143 / 15.241	8	stage III and IV pyrite and galena Mean and standard deviation recalculated from 8 analyses, 15.143 to 15.241 (ZK3101-8 (pyrite, stage IV) 15.162; ZK3101-13 (galena, stage IV) 15.156; ZK3201-8 (pyrite, stage IV) 15.209; ZK3201-10 (pyrite, stage III) 15.221; ZK3204-3 (galena, stage IV) 15.143; ZK3204-20 (pyrite, stage III) 15.241; ZK3204-23 (pyrite, stage III) 15.171; ZK3302-20 (pyrite, stage III) 15.202). Unradiogenic lead, from the lower crust according to the authors.	Sun et al. (2014), Isotope geochemistry and geochronology of the Qiubudong silver deposit…

208Pb/204Pb isotope ratio, no unit Values of the same system

Standard : Non précisé dans la publication

Value	Range	n	Mineral or matrix	Source
37.222 ± 0.186	36.999 / 37.59	8	stage III and IV pyrite and galena Mean and standard deviation recalculated from 8 analyses, 36.999 to 37.590 (ZK3101-8 (pyrite, stage IV) 37.019; ZK3101-13 (galena, stage IV) 36.999; ZK3201-8 (pyrite, stage IV) 37.220; ZK3201-10 (pyrite, stage III) 37.590; ZK3204-3 (galena, stage IV) 37.194; ZK3204-20 (pyrite, stage III) 37.340; ZK3204-23 (pyrite, stage III) 37.193; ZK3302-20 (pyrite, stage III) 37.224). Unradiogenic lead, from the lower crust according to the authors.	Sun et al. (2014), Isotope geochemistry and geochronology of the Qiubudong silver deposit…

3He/4He (R/Ra) isotope ratio, no unit Values of the same system

Standard : Air (Ra = 1,4 × 10⁻⁶) : valeurs en R/Ra

Value	Range	n	Mineral or matrix	Source
0.9805 ± 0.466	0.4542 / 1.6495	5	pyrite fluid inclusions Mean and standard deviation recalculated from 5 analyses, 0.4542 to 1.6495 (ZK3101-15 (stage IV) 0.4542; ZK3203-3 (stage III) 1.0842; ZK3204-20 (stage III) 0.6304; ZK3302-6 (stage III) 1.0841; ZK3302-13 (stage III) 1.6495). Published mean 0.98 Ra; mantle helium from 5.44 to 20.42 %. 4He (10⁻⁷ cm3 STP/g): ZK3101-15 531 ± 36; ZK3203-3 181 ± 12; ZK3204-20 139.8 ± 9.4; ZK3302-6 86.0 ± 5.8; ZK3302-13 155 ± 10.	Sun et al. (2014), Isotope geochemistry and geochronology of the Qiubudong silver deposit…

40Ar/36Ar isotope ratio, no unit Values of the same system

Standard : Air (40Ar/36Ar = 295,5)

Value	Range	n	Mineral or matrix	Source
643.5 ± 195.4	453.2 / 954.8	5	pyrite fluid inclusions Mean and standard deviation recalculated from 5 analyses, 453.2 to 954.8 (ZK3101-15 (stage IV) 681.3; ZK3203-3 (stage III) 954.8; ZK3204-20 (stage III) 617.2; ZK3302-6 (stage III) 511.2; ZK3302-13 (stage III) 453.2). Published mean 643.5; well above air: crustal radiogenic argon.	Sun et al. (2014), Isotope geochemistry and geochronology of the Qiubudong silver deposit…

87Sr/86Sr isotope ratio, no unit Values of the same system

Standard : NIST SRM 987

Value	Range	n	Mineral or matrix	Source
0.715854 ± 0.007021	0.710618 / 0.730365	7	stage III and IV pyrite (present-day ratio) Mean and standard deviation recalculated from 7 analyses, 0.710618 to 0.730365 (ZK3101-6 (stage IV) 0.718531; ZK3101-7 (stage IV) 0.716054; ZK3101-8 (stage IV) 0.712692; ZK3101-12 (stage IV) 0.730365; ZK3201-20 (stage IV) 0.711633; ZK3204-20 (stage III) 0.711086; ZK3302-20 (stage III) 0.710618). Table 4 (2σ on the last digits): ZK3101-6 (Rb 6.829, Sr 3.257 µg/g, 87Rb/86Sr 6.194, ± 9); ZK3101-7 (Rb 1.924, Sr 1.156 µg/g, 87Rb/86Sr 4.887, ± 10); ZK3101-8 (Rb 1.705, Sr 2.342 µg/g, 87Rb/86Sr 2.165, ± 8); ZK3101-12 (Rb 6.837, Sr 1.409 µg/g, 87Rb/86Sr 14.36, ± 7); ZK3201-20 (Rb 1.964, Sr 3.897 µg/g, 87Rb/86Sr 1.471, ± 8); ZK3204-20 (Rb 0.5248, Sr 1.453 µg/g, 87Rb/86Sr 1.053, ± 6); ZK3302-20 (Rb 0.3975, Sr 1.624 µg/g, 87Rb/86Sr 0.7309, ± 9). Seven-point isochron of 101.9 ± 3.6 Ma (initial Sr 0.70947 ± 0.00033, MSWD 5.3); without ZK3101-7, 102.04 ± 0.61 Ma (initial Sr 0.709544 ± 0.000056, MSWD 0.23). The text gives Rb 1.53 and Sr 1.38 µg/g for ZK3101-7, the table 1.924 and 1.156.	Sun et al. (2014), Isotope geochemistry and geochronology of the Qiubudong silver deposit…

Deposits of the same type

Cite this page

IsoFind Atlas (2026). Qiubudong, isotope signatures. https://www.isofind.tech/isotopes/en/deposits/qiubudong/ (accessed 2026-10-22).

@misc{isofind2026qiubudongisotopesignatures,
  title = {Qiubudong, isotope signatures},
  author = {{IsoFind Atlas}},
  year = {2026},
  url = {https://www.isofind.tech/isotopes/en/deposits/qiubudong/},
  note = {Accessed 2026-10-22}
}

Updated : 2026-10-22