δ11B of IOCG: published values
in ‰ (per mil)
IOCG. 39 published values for 11 deposits or sites. Standards, minerals and sources for every value.
| Deposits | Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|---|
| Bailingshan China | 2.9 ± 0.7 ‰ | 1.7 / 4.1 ‰ | 16 | tourmaline I of quartz-K-feldspar nodules in potassic-altered granite | Zhang et al. (2018), Discriminating hydrothermal fluid sources using tourmaline boron iso… |
| Bailingshan China | 5.1 ± 1 ‰ | 3.5 / 6.6 ‰ | 19 | tourmaline II of epidote veinlets cutting potassic-altered volcanics | Zhang et al. (2018), Discriminating hydrothermal fluid sources using tourmaline boron iso… |
| Candelaria-Punta del Cobre district Chile | −1.9 ± 3.2 ‰ | −6.1 / 1.2 ‰ | 7 | tourmaline from the deep parts of the Candelaria deposit (CAND-1) | Tornos et al. (2012), The boron isotope geochemistry of tourmaline-rich alteration in the… |
| Candelaria-Punta del Cobre district Chile | −3.5 ± 3.4 ‰ | −10.4 / 1.5 ‰ | 11 | tourmaline from replaced andesite of the Carola mine (383.1) | Tornos et al. (2012), The boron isotope geochemistry of tourmaline-rich alteration in the… |
| Furnas Brazil | 15.2 ± 0.9 ‰ | 13.1 / 17.2 ‰ | 17 | disseminated tourmaline of the Fe-K alteration, sample FD39-118 | Melo et al. (2021), Magmatic-hydrothermal fluids leaching older seafloor exhalative rocks… |
| GT-46 Brazil | 5.8 ± 0.6 ‰ | 5.1 / 6.4 ‰ | 6 | tourmaline of Fe-K halos near granites and pegmatites, sample FD39-232 | Melo et al. (2021), Magmatic-hydrothermal fluids leaching older seafloor exhalative rocks… |
| Grota Funda Brazil | 10.5 ± 1.2 ‰ | 8.2 / 13.6 ‰ | 15 | tourmaline coeval with late chloritization, sample 1093 | Melo et al. (2021), Magmatic-hydrothermal fluids leaching older seafloor exhalative rocks… |
| Igarapé Bahia Brazil | 12.8 ± 1.3 ‰ | 11 / 14.6 ‰ | 10 | tourmaline cores of the carbonate envelope, sample FD173 | Melo et al. (2021), Magmatic-hydrothermal fluids leaching older seafloor exhalative rocks… |
| Igarapé Bahia Brazil | 6.8 ± 2.5 ‰ | 3.4 / 9.8 ‰ | 10 | tourmaline rims of the carbonate envelope, sample FD173 | Melo et al. (2021), Magmatic-hydrothermal fluids leaching older seafloor exhalative rocks… |
| Igarapé Bahia Brazil | 18.9 ± 4.4 ‰ | 12.6 / 26.3 ‰ | 23 | disseminated tourmaline in the ore-breccia matrix, ACPS orebody | Xavier et al. (2008), Tourmaline B-isotopes fingerprint marine evaporites as the source o… |
| Igarapé Bahia Brazil | 7.2 ± 1.2 ‰ | 5.8 / 8.8 ‰ | 5 | disseminated ore-breccia tourmaline, sample F353/188 (high-grade ACPN orebody according to the text) | Xavier et al. (2008), Tourmaline B-isotopes fingerprint marine evaporites as the source o… |
| Igarapé Bahia Brazil | 19.6 ± 1 ‰ | 18.1 / 20.6 ‰ | 7 | tourmaline from metachert fragments in the ore breccia, Furo Trinta orebody | Xavier et al. (2008), Tourmaline B-isotopes fingerprint marine evaporites as the source o… |
| Igarapé Bahia Brazil | 17.4 ± 1.1 ‰ | 16.2 / 18.3 ‰ | 3 | late discordant veinlet tourmaline (F382/223) | Xavier et al. (2008), Tourmaline B-isotopes fingerprint marine evaporites as the source o… |
| Salobo Brazil | 16.5 ± 0.6 ‰ | 14.9 / 17 ‰ | 11 | tourmaline cores of the Fe-K alteration, sample FD177 | Melo et al. (2021), Magmatic-hydrothermal fluids leaching older seafloor exhalative rocks… |
| Salobo Brazil | 5.6 ± 1.5 ‰ | 3.4 / 8.2 ‰ | 9 | tourmaline rims of the Fe-K alteration, sample FD177 | Melo et al. (2021), Magmatic-hydrothermal fluids leaching older seafloor exhalative rocks… |
| Salobo Brazil | 18.7 ± 3.3 ‰ | 14.5 / 24 ‰ | 14 | tourmaline associated with bornite-chalcocite-chalcopyrite ore | Xavier et al. (2008), Tourmaline B-isotopes fingerprint marine evaporites as the source o… |
| Silvita Chile | 0.5 ± 3.2 ‰ | −4.9 / 6 ‰ | 14 | massive and fibrous breccia tourmaline (SILV-2) | Tornos et al. (2012), The boron isotope geochemistry of tourmaline-rich alteration in the… |
| Sossego Brazil | 0.2 ± 7.2 ‰ | −8.1 / 8.6 ‰ | 8 | tourmaline porphyroblasts of the sodic alteration, Pista orebody | Xavier et al. (2008), Tourmaline B-isotopes fingerprint marine evaporites as the source o… |
| Sossego Brazil | 2.6 ± 6.2 ‰ | −7.4 / 8.6 ‰ | 12 | chalcopyrite veinlet tourmaline, Pista orebody | Xavier et al. (2008), Tourmaline B-isotopes fingerprint marine evaporites as the source o… |
| Sossego Brazil | −0.1 ± 6.3 ‰ | −6.8 / 9.3 ‰ | 5 | fine-grained tourmaline of layers alternating with albite, quartz and scapolite, Pista orebody | Xavier et al. (2008), Tourmaline B-isotopes fingerprint marine evaporites as the source o… |
| Taocun China | −4.87 ± 0.75 ‰ | −6.27 / −3.63 ‰ | 33 | tourmaline I of the sodic alteration, pre-ore (NW-56, albitite) | Su et al. (2019), Tourmaline boron and strontium isotope systematics reveal magmatic flui… |
| Taocun China | −3.07 ± 0.77 ‰ | −4.79 / −1.86 ‰ | 21 | tourmaline I of the sodic alteration, pre-ore (NW-63-1, albitized diorite) | Su et al. (2019), Tourmaline boron and strontium isotope systematics reveal magmatic flui… |
| Taocun China | −2.38 ± 0.69 ‰ | −4.43 / −1.37 ‰ | 25 | tourmaline I of the sodic alteration, pre-ore (NW-63, albitized diorite) | Su et al. (2019), Tourmaline boron and strontium isotope systematics reveal magmatic flui… |
| Taocun China | −2.83 ± 1.34 ‰ | −5.32 / −1.19 ‰ | 13 | tourmaline I of the sodic alteration, pre-ore (14NW-111, albitite, light cores) | Su et al. (2019), Tourmaline boron and strontium isotope systematics reveal magmatic flui… |
| Taocun China | −2.45 ± 0.59 ‰ | −3.51 / −1.76 ‰ | 6 | tourmaline I of the sodic alteration, pre-ore (14NW-103, albitite, light cores) | Su et al. (2019), Tourmaline boron and strontium isotope systematics reveal magmatic flui… |
| Taocun China | 2.68 ± 3.08 ‰ | −1.57 / 5.37 ‰ | 7 | tourmaline II of the Ca-Fe alteration with magnetite, syn-ore (14NW-111, magnetite albitite, dark rims) | Su et al. (2019), Tourmaline boron and strontium isotope systematics reveal magmatic flui… |
| Taocun China | 2.77 ± 2.17 ‰ | −0.37 / 4.65 ‰ | 6 | tourmaline II of the Ca-Fe alteration with magnetite, syn-ore (14NW-111, magnetite-actinolite-apatite amygdule) | Su et al. (2019), Tourmaline boron and strontium isotope systematics reveal magmatic flui… |
| Taocun China | 0.41 ± 1.59 ‰ | −0.72 / 3.56 ‰ | 7 | tourmaline II of the Ca-Fe alteration with magnetite, syn-ore (14NW-103, magnetite albitite, dark rims) | Su et al. (2019), Tourmaline boron and strontium isotope systematics reveal magmatic flui… |
| Taocun China | 0.35 ± 0.57 ‰ | −0.72 / 1.24 ‰ | 12 | tourmaline II of the Ca-Fe alteration with magnetite, syn-ore (14NW-101, disseminated scapolite-albite-magnetite-apatite-actinolite ore) | Su et al. (2019), Tourmaline boron and strontium isotope systematics reveal magmatic flui… |
| Taocun China | 1.65 ± 1.46 ‰ | −0.91 / 3.63 ‰ | 21 | tourmaline II of the Ca-Fe alteration with magnetite, syn-ore (17NW-8, veined magnetite-apatite-actinolite ore) | Su et al. (2019), Tourmaline boron and strontium isotope systematics reveal magmatic flui… |
| Taocun China | −1.08 ± 0.74 ‰ | −2.44 / 0.51 ‰ | 18 | tourmaline II of the Ca-Fe alteration with magnetite, syn-ore (17NW-5, veined magnetite-actinolite ore) | Su et al. (2019), Tourmaline boron and strontium isotope systematics reveal magmatic flui… |
| Taocun China | 4.03 ± 0.21 ‰ | 3.57 / 4.29 ‰ | 13 | tourmaline II of the Ca-Fe alteration with magnetite, syn-ore (NW-87, veined or massive magnetite-actinolite-gypsum ore) | Su et al. (2019), Tourmaline boron and strontium isotope systematics reveal magmatic flui… |
| Taocun China | −4.8 ± 3.3 ‰ | −8.47 / −0.11 ‰ | 6 | tourmaline IIIa of actinolite-sulphide veins, post-ore (14NW-11, actinolite-pyrite-chalcopyrite vein cutting albitite, dark cores) | Su et al. (2019), Tourmaline boron and strontium isotope systematics reveal magmatic flui… |
| Taocun China | −0.12 ± 1.06 ‰ | −2.66 / 0.79 ‰ | 8 | tourmaline IIIa of actinolite-sulphide veins, post-ore (14NW-11, actinolite-pyrite-chalcopyrite vein cutting albitite, rims) | Su et al. (2019), Tourmaline boron and strontium isotope systematics reveal magmatic flui… |
| Taocun China | −0.07 ± 0.28 ‰ | −0.5 / 0.26 ‰ | 7 | tourmaline IIIa of actinolite-sulphide veins, post-ore (14NW-50, actinolite-pyrite vein cutting massive ore) | Su et al. (2019), Tourmaline boron and strontium isotope systematics reveal magmatic flui… |
| Taocun China | −4.96 ± 0.94 ‰ | −5.58 / −2.69 ‰ | 8 | tourmaline IIIb of calcite-pyrite veins, post-ore (14NW-112, calcite-pyrite vein cutting massive ore, dark cores) | Su et al. (2019), Tourmaline boron and strontium isotope systematics reveal magmatic flui… |
| Taocun China | −5.16 ± 0.34 ‰ | −5.71 / −4.76 ‰ | 7 | tourmaline IIIb of calcite-pyrite veins, post-ore (14NW-112, calcite-pyrite vein cutting massive ore, light rims) | Su et al. (2019), Tourmaline boron and strontium isotope systematics reveal magmatic flui… |
| Tropezón Chile | −1.8 ± 2 ‰ | −5.9 / 0.5 ‰ | 14 | breccia pipe tourmaline (TR-34) | Tornos et al. (2012), The boron isotope geochemistry of tourmaline-rich alteration in the… |
| Tropezón Chile | −5.1 ± 1.6 ‰ | −7.6 / −2.1 ‰ | 13 | later ore-related tourmaline (TR-56) | Tornos et al. (2012), The boron isotope geochemistry of tourmaline-rich alteration in the… |
Published δ11B (boron) values, deposit by deposit
Cite this page
IsoFind Atlas (2026). δ11B of IOCG: published values. https://www.isofind.tech/isotopes/en/boron-d11b/iocg/ (accessed 2026-10-20).
@misc{isofind202611bofiocgpublishedvalues,
title = {δ11B of IOCG: published values},
author = {{IsoFind Atlas}},
year = {2026},
url = {https://www.isofind.tech/isotopes/en/boron-d11b/iocg/},
note = {Accessed 2026-10-20}
}Updated : 2026-10-20