Takatori
Shirosato, Ibaraki Prefecture (Japanese Sn-W province), Japan
Other hydrothermalW-Sn
- Type
- Hypothermal wolframite-quartz veins
Wolframite-quartz veins (0.5 to 3 % WO3), with cassiterite, chalcopyrite, pyrite and Li-bearing muscovite, over 900 m by 500 m in the Jurassic Yamizo group accretionary sediments, about 100 km north of Tokyo. Muscovite dated at 68.7 ± 2.1 Ma (K-Ar). Ilmenite-series granite inferred at depth; magmatic fluid (δ18O +10 to +8 ‰) cooled and mixed with meteoric water; formation at about 160 MPa, i.e. about 6 km. Estimated coordinates. Indicative coordinates.
δ18O in ‰ (per mil) Values of the same system
Standard : V-SMOW
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| 13.3 ± 0.3 ‰ | 13 / 13.9 ‰ | 7 | vein quartz Mean and standard deviation recalculated from 7 measurements, Table 5. Seven measurements on five samples (one per mineral pair). | Morishita and Nishio (2021), Ore genesis of the Takatori tungsten-quartz vein deposit, Ja… |
| 5.6 ± 0.5 ‰ | 5 / 6.1 ‰ | 4 | wolframite Mean and standard deviation recalculated from 4 samples, Table 5. Quartz-wolframite temperatures of 357 to 430 °C; calculated fluid from 7.5 to 9.0 ‰. | Morishita and Nishio (2021), Ore genesis of the Takatori tungsten-quartz vein deposit, Ja… |
| 10.4 ± 0.2 ‰ | 10.3 / 10.6 ‰ | 2 | Li-bearing muscovite Mean and standard deviation recalculated from 2 samples, Table 5. Quartz-muscovite temperatures of 463 and 418 °C; calculated fluid at 9.8 and 9.0 ‰. | Morishita and Nishio (2021), Ore genesis of the Takatori tungsten-quartz vein deposit, Ja… |
| 5.3 ‰ | 1 | cassiterite One analysis, Table 5. Quartz-cassiterite temperature of 386 °C. | Morishita and Nishio (2021), Ore genesis of the Takatori tungsten-quartz vein deposit, Ja… | |
| 5.4 ‰ | 1 | late fine-grained sericite One analysis, text (section 4.3). Not in equilibrium with quartz (apparent 140 °C). | Morishita and Nishio (2021), Ore genesis of the Takatori tungsten-quartz vein deposit, Ja… |
δ7Li in ‰ (per mil) Values of the same system
Standard : L-SVEC
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| −2.5 ± 0.5 ‰ | −3.1 / −2.1 ‰ | 3 | Li-bearing muscovite (early stage) Mean and standard deviation recalculated from 3 samples, Table 4. Li from 0.175 to 0.242 %. | Morishita and Nishio (2021), Ore genesis of the Takatori tungsten-quartz vein deposit, Ja… |
| 0.8 ± 1.9 ‰ | −0.6 / 2.1 ‰ | 2 | Li-poor sericite (late) Mean and standard deviation recalculated from 2 samples, Table 4. Heavier than muscovite: precipitated after the main stage. | Morishita and Nishio (2021), Ore genesis of the Takatori tungsten-quartz vein deposit, Ja… |
δ124Sn in ‰ (per mil) Values of the same system
Standard : NIST SRM 3161a
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| 0.97 ± 0.24 ‰ | 1 | cassiterite Single analysis (three measurements), Table 5: δ124/120Sn = 0.17 ± 0.11 ‰ (2 SD) against SPEX1, converted. Sample M22561, one of the two heaviest from Japan; stannite seen in thin section. | Yamazaki et al. (2013), Tin isotope analysis of cassiterites from Southeastern and Easter… |
Deposits of the same type
- Naegi district Japan
- Ohtani (Ōtani) Japan
- Kaneuchi Japan
- Ikuno Japan
- Suii Japan
- Kavalerovo district tin deposits Russia
- Arsenievskoe Russia
- Smirnovskoe Russia
Cite this page
IsoFind Atlas (2026). Takatori, isotope signatures. https://www.isofind.tech/isotopes/en/deposits/takatori/ (accessed 2026-10-13).
@misc{isofind2026takatoriisotopesignatures,
title = {Takatori, isotope signatures},
author = {{IsoFind Atlas}},
year = {2026},
url = {https://www.isofind.tech/isotopes/en/deposits/takatori/},
note = {Accessed 2026-10-13}
}Updated : 2026-10-13