Agrokipia B
Troodos ophiolite, northern flank (Agrokipia), Chypre
Volcanogenic massive sulfidesCu-Zn (pyrite)
- Type
- Cyprus-type subseafloor sulphide stockwork (pyrite, sphalerite, chalcopyrite)
Subseafloor sulphide stockwork developed in the lower pillow lavas and underlying dykes of the Cretaceous Troodos ophiolite, cut by drill hole CY2A; neighbouring exhalative Agrokipia A massive sulphide. Zone A (0-154 m) altered at > 50-135 °C (smectite, celadonite, zeolites); zone B (154-300 m) with stockwork (chlorite, quartz, illite, sulphides) up to 250 °C under high water/rock ratios; zone C (300-689 m) in lower greenschist facies, below 300 °C. Yamaoka et al. (2015): δ11B falling with depth to -6 ‰ in highly altered dykes despite 2.5 to 17 µg/g B and 87Sr/86Sr of 0.7064; ore fluid that crossed a crust already enriched in boron by low-temperature alteration. Coordinates not published.
δ11B in ‰ (per mil) Values of the same system
Standard : NIST SRM 951
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| 2.9 ± 0.7 ‰ | 2.4 / 3.4 ‰ | 2 | zone A pillow lavas (low-temperature alteration) Mean and standard deviation recalculated from 2 analyses, +2.4 to +3.4 (Z-11 10,8 m +2.4; Z-17 151,8 m +3.4). 6.2 and 21.0 µg/g B; 0.92 to 17.0 µg/g in zone A (7.2 on average). | Yamaoka et al. (2015), Boron isotope systematics of a fossil hydrothermal system from the… |
| 4.1 ± 0.7 ‰ | 3.5 / 4.8 ‰ | 3 | zone B pillow lavas (sulphide stockwork) Mean and standard deviation recalculated from 3 analyses, +3.5 to +4.8 (Z-20 175,3 m +3.5; Z-22 234,5 m +4.8; Z-30 289,9 m +4.0). 5.1 to 14.9 µg/g B; red jasper and sulphide of the same level without δ11B. | Yamaoka et al. (2015), Boron isotope systematics of a fossil hydrothermal system from the… |
| −2 ± 3.8 ‰ | −6.4 / 3.5 ‰ | 6 | zone C pillow lavas and dykes (lower greenschist facies) Mean and standard deviation recalculated from 6 analyses, -6.4 to +3.5 (Z-37 397,6 m +3.5; Z-40 461,4 m +0.6; Z-42 537,0 m -1.2; Z-47 666,4 m -2.7; Z-47B 666,4 m -6.4; Z-49 680,4 m -5.7). 2.5 to 17 µg/g B. In equilibrium with a fluid at 300 °C (α = 0.986, Wunder et al., 2005), hydrothermal fluid of +8.4 to +19.6 ‰, well below present ridge fluids (+24.3 to +32.6 ‰). | Yamaoka et al. (2015), Boron isotope systematics of a fossil hydrothermal system from the… |
Deposits of the same type
- Iberian Pyrite Belt (representative example) Spain/Portugal
- Neves-Corvo Portugal
- Kidd Creek Canada
- Flin Flon Canada
- Rio Tinto Spain
- Cyclades (Kondaros-Katsimouti and Triades) Greece
- Boliden Sweden
- Tharsis Spain
Cite this page
IsoFind Atlas (2026). Agrokipia B, isotope signatures. https://www.isofind.tech/isotopes/en/deposits/agrokipia-b/ (accessed 2026-10-19).
@misc{isofind2026agrokipiabisotopesignatures,
title = {Agrokipia B, isotope signatures},
author = {{IsoFind Atlas}},
year = {2026},
url = {https://www.isofind.tech/isotopes/en/deposits/agrokipia-b/},
note = {Accessed 2026-10-19}
}Updated : 2026-10-19