Mining eras
- Earliest proven copper mining. Pernicka et al. (1997) demonstrated extraction via trace-element + lead-isotope provenance matching of Chalcolithic metal artifacts with Medni Rid ore samples.
- Near-surface oxidation zone (malachite, azurite, chrysocolla, native copper down to 15–20 m) easily smelted in antiquity.
- Copper (+ some silver) mined since this time (Wikipedia). Thracian activity.
- Fortresses of crushed stone built on all high points of the ridge (Atia, Bakarlaka, Lobodovo Kale, Malkoto Kale).
- Continued copper extraction from near-surface oxidation zone.
- Active exploitation of the copper deposits during the era of Apollonia Pontika (Greek colony = modern Sozopol).
- Continued use of deposits — the 'later' timeframe per the Tübingen book, to the period of Greek colonisation and beyond.
- Deep mining of the most important veins to depths of ~1,000 m.
- Industrial mine 'Stahanov' operates at Korucheshme/Kyumyurlaka.
- Closure of the last copper mine, 'Rosen'.
- Rescue excavations at Budzhaka (Sozopol) and Akladi Cheiri (Chernomorets) under Petar Leshtakov (NAIM-BAN) uncover Chalcolithic metallurgical production remains — renews attention to the mining district.
Mining History — Timeline
Sources: Wikipedia (Medni Rid), Tzankova (2023), the Tübingen project page (SFB 1070), Kunze & Pernicka (2020b), Sillitoe et al. (2020).
Chronology
| Period | Event |
|---|---|
| 5th millennium BC (Chalcolithic / Eneolithic) | Earliest proven copper mining. Pernicka et al. (1997) demonstrated extraction via trace-element + lead-isotope provenance matching of Chalcolithic metal artifacts with Medni Rid ore samples. |
| 2nd millennium BC (Bronze Age) | Wikipedia records copper (+ some silver) mined since this time. Thracian activity. |
| Thracian period (1st millennium BC) | Fortresses of crushed stone built on all high points of the ridge (Atia, Bakarlaka, Lobodovo Kale, Malkoto Kale). |
| Greek colonization (7th c. BC onward) | Active exploitation of the copper deposits during the era of Apollonia Pontika (Greek colony = modern Sozopol). |
| Later antiquity → medieval | Continued use of deposits (the “later” timeframe per the Tübingen book, to the period of Greek colonisation and beyond). |
| Modern industrial era | Deep mining of the most important veins to depths of ~1,000 m. |
| 1960s–1980s | Active geological/mineralogical study (Bogdanov 1987; Todorov 1971, 1990; Vasileva-Stanisheva & Vasilev 1981). |
| 1995 | Closure of the last copper mine, “Rosen”. |
| 2000s | Rescue excavations at Budzhaka (Sozopol) and Akladi Cheiri (Cherno morets) under Petar Leshtakov (NAIM-BAN) uncover Chalcolithic metallurgical production remains — renews attention to the mining district. |
| 2013–2015 | Tübingen SFB 1070 fieldwork: systematic survey + LiDAR of pre-industrial mining traces. |
| 2020 | Sillitoe et al. reclassify Rosen as an IOCG district; the Tübingen group publishes the open-access book. |
Thracian fortresses on the ridge
On all high points of the ridge, from north to south (Wikipedia):
- Atia
- Bakarlaka
- Lobodovo Kale
- Malkoto Kale — the only one methodically excavated (1973–1977).
Continuity of exploitation
A striking feature of this district is the continuity of copper mining for ~6,000 years — from the Chalcolithic (~5th millennium BC) through Thracian, Greek-colonial, and modern industrial periods, to the 1995 closure. Few mining landscapes in the world show such duration. The deposits were economically viable across radically different technological and social regimes because the near-surface oxidation zone (malachite, azurite, chrysocolla, native copper down to 15–20 m) was easily smelted in antiquity, while the deep hypogene veins (to ~1,000 m) fed modern industry.
See also
archaeometallurgy-research.md— the modern research on this history.
Archaeometallurgical Research — The Tübingen SFB 1070 Project
Sources: the University of Tübingen Medni Rid project page; Kunze et al. (2018); Kunze & Pernicka (2020b); Tzankova (2023); the open-access book (Krauss et al. 2020).
The project
A case study of subproject A01 of the Tübingen SFB 1070 “RessourcenKulturen” (ResourceCultures Collaborative Research Center), investigating the traces of ancient mining in the hinterland of the southern Bulgarian Black Sea coast. The ridge Medni Rid (older Turkish name Bakarlik) is the focus.
Research team
| Role | Person |
|---|---|
| German co-leads | PD Dr. Raiko Krauß, Prof. Dr. Ernst Pernicka |
| Bulgarian co-lead | Dr. Ljudmil Vagalinski (Director, Bulgarian Archaeological Institute) |
| Fieldwork lead | Petar Leshtakov (NAIM-BAN Sofia) |
| Contributors | Dr. Kalin Dimitrov (NAIM-BAN Sofia), Dr. René Kunze (Tübingen Post-Doc), Jonas Abele, Tim Rödel, and rotating students from Bulgaria, Germany, and other European countries. |
Background & motivation
- Chernykh (1978) first reported extensively on the traces of prehistoric mining in the region.
- Pernicka et al. (1997) proved copper mining from the 5th millennium BC by comparing trace elements and lead isotopes in Chalcolithic metal artifacts with ore samples from Medni Rid.
- In the 2000s, rescue excavations ahead of new hotel construction in the Sozopol area, led by Petar Leshtakov (NAIM-BAN), uncovered Chalcolithic metallurgical production remains at Budzhaka (a southern Sozopol neighborhood) and Akladi Cheiri (a resort north of the city). This renewed attention to the mining district.
Objectives
Systematically map all installations of pre-industrial mining in the Medni Rid area and date them via surface finds. Initial results confirmed active use of the copper deposits especially during the period of Greek Black Sea colonization by Apollonia Pontika (Sozopol). Numerous burial mounds and smaller settlement sites attest to dense settlement around the mountain, including in prehistoric times.
Why Medni Rid matters for Chalcolithic studies
The deposits are of particular importance for interpreting the supply structure of the Chalcolithic tell cultures due to their geographical proximity to the large tell settlements in NE Bulgaria. The Black Sea may have served as a maritime transport route. Interestingly, no tell settlements are found in the immediate settlement vicinity — only smaller, single-layer settlements where metal was processed.
Methods
- LiDAR laser scanning combined with field survey — to detect and map surface mining features (Kunze et al. 2018, 2020).
- Geochemical analyses (trace elements, lead isotopes) of ore and slag samples (Kunze & Pernicka 2020b).
- Slag analysis (phase-chemical and structural) to reconstruct ancient smelting (Stavrakeva & Tzankova 2016a,b; Tzankova & Stavrakeva 2020a–c).
- Malachite provenance via LA-ICP-MS (Tzankova 2023).
Key findings
- Akladi Cheiri slags (Rehren et al. 2016, 2020) are by-products of smelting very rich copper ore — almost pure malachite with only minor slag-forming gangue and associated ore minerals.
- The fieldwork identified and catalogued numerous pre-industrial mining installations (Leshtakov et al. 2020a: a full catalogue in the open-access book, pp. 327–390).
- Malachite from each of the five deposits has a distinguishable impurity fingerprint (Zn, Co, Mg, As, Ag, Se), supporting future provenance work on Chalcolithic artifacts (Tzankova 2023).
Key publications
- Kunze, R., Abele, J., Leshtakov, P., Dimitrov, K., Krauß, R., Rödel, T. (2018) — Archaeometallurgical prospections in the highlands of Medni Rid, SE Bulgaria: preliminary report on fieldwork 2013–2015 with a focus on remote sensing (LiDAR). J. Archaeological Science Reports 19: 596–617. https://doi.org/10.1016/j.jasrep.2018.03.021
- Kunze, R. & Pernicka, E. (2020b) — Pre-industrial mining in Medni Rid. Geochemical analyses. In: Krauss et al. (Eds), 2020, pp. 391–418. (open access)
- Kunze, R., Leshtakov, P., Abele, J., Dimitrov, K. (2020) — Results of the field survey in combination with LiDAR laser scanning in the Medni Rid area. In: Krauss et al. (Eds), 2020, pp. 307–326. (open access)
- Leshtakov, P. et al. (2020a) — Catalogue of Investigated Archaeological Sites and Mining Places. In: Krauss et al. (Eds), 2020, pp. 327–390. (open access)
- Rehren, T., Penkova, P., Pernicka, E. (2020) — The Chalcolithic Copper Smelting at Akladi Cheiri. In: Krauss et al. (Eds), 2020, pp. 141–160. (open access)
- Leshtakov, P. (2013) — The early copper metallurgy on the West Black Sea coast. Archaeological evidence on prehistoric exploitation of the Rosen ore field. (Ahtopol conference).
Project page
Site catalogue
15 mining and metallurgical sites from the Tübingen catalogue (Krauss et al. 2020).