Mariinsky (Malyshevo)
Central Urals, Ural emerald belt (Malyshevo, Sverdlovsk Oblast), Russia
OtherBe (émeraude)
- Type
- Emerald, alexandrite and phenakite in phlogopite schists (schist-hosted type)
Largest emerald, alexandrite and phenakite deposit of the Ural emerald belt, 80 km NE of Yekaterinburg, in a serpentinite melange zone between the Adui and Malyshevo plutons; lenticular emerald-bearing phlogopite schist bodies (type 1 veins) cut by late emerald-free pockets and veinlets (type 2). Baksheev et al. (2018): tourmalines from -11.3 to -8.4 ‰ (mean -10.1 ‰), formed at about 420 to 360 °C; fluid from -8.6 to -5.7 ‰, mixed boron from granites and ultramafic host rocks. Indicative coordinates of Malyshevo, not published in the article.
δ11B in ‰ (per mil) Values of the same system
Standard : NIST SRM 951
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| −10.4 ± 0.6 ‰ | −10.9 / −9.3 ‰ | 9 | tourmaline of emerald-bearing phlogopite veins (types 1a to 1c) Mean and standard deviation recalculated from 9 analyses, -10.9 to -9.3 (M-8 -10.4; M-8 -10.4; M-102 -9.6; M-102 -9.3; M-104 -10.6; M-104 -10.5; KA-5 -10.8; KA-5 -10.8; KA-5 -10.9). Phlogopite-tourmaline veins, with talc, tremolite or plagioclase depending on the sample; formed at about 410 to 420 °C (tourmaline-biotite thermometer). | Baksheev et al. (2018), Chemical and boron isotopic composition of tourmaline from the Ma… |
| −10.1 ± 0.8 ‰ | 11 | tourmaline of chromite-phlogopite-paragonite alteration (type 1d, BAK-1) Published mean and standard deviation of 11 analyses. | Baksheev et al. (2018), Chemical and boron isotopic composition of tourmaline from the Ma… | |
| −10 ± 0.8 ‰ | −11.1 / −8.9 ‰ | 14 | tourmaline of late emerald-free pockets, veinlets and lenses (type 2) Mean and standard deviation recalculated from 14 analyses, -11.1 to -8.9 (Chb -10.0; Chb -10.0; M-127 -11.0; M-127 -10.5; M-112 -10.8; M-112 -10.5; M-115 -11.1; M-115 -10.8; M-131 -9.8; M-131 -9.7; M-134 -9.1; M-134 -8.9; M-119 -8.9; M-119 -8.9). Plagioclase-quartz pockets, fluorite or margarite veinlets, topaz-paragonite lens; margarite veinlets formed at about 350 to 360 °C. | Baksheev et al. (2018), Chemical and boron isotopic composition of tourmaline from the Ma… |
Deposits of the same type
- Inta coal (Pechora Basin) Russia
- Severny open pit (Ekibastuz Basin) Kazakhstan
- Ekibastuz coal Kazakhstan
- Zankan China
- Angouran Iran
- Dunde China
- Beryozovsky coal (Kansk-Achinsk Basin) Russia
- Huoshaoyun China
Cite this page
IsoFind Atlas (2026). Mariinsky (Malyshevo), isotope signatures. https://www.isofind.tech/isotopes/en/deposits/mariinsky-malyshevo/ (accessed 2026-10-19).
@misc{isofind2026mariinskymalyshevoisotopesign,
title = {Mariinsky (Malyshevo), isotope signatures},
author = {{IsoFind Atlas}},
year = {2026},
url = {https://www.isofind.tech/isotopes/en/deposits/mariinsky-malyshevo/},
note = {Accessed 2026-10-19}
}Updated : 2026-10-19