The Society of Studies of the Lavrion Region founded the Mineralogical Museum of Lavrion, with the aim of highlighting one of the most important aspects of the region's natural wealth. The Museum is dedicated to the memory of A. Kordellas (1836-1909), the major contributor to the revival of modern-day Lavrion. The Lavrion area is one of the most favoured sites in the world from the point of view of its variety of minerals, and samples of its minerals are displayed in the greatest Natural History Museums.
The Mineralogical Museum of Lavrion is housed in a small but noteworthy example of the industrial architecture of the 19th century (1873), in the remains of the important metal-washing plant of the Greek Society. In the Museum's showcases are exhibited approximately 700 samples of 115 different kinds of minerals, classified according to the norms of mineralogical science (DANA 1850), into the following categories: sulphides, sulphates, native elements, halogens, limes, oxides-hydroxides, arsenides, vanadiums. All the exhibits are in crystal form.
Some of the exhibits are exceedingly rare (annabergites, serpierites, spangolites, laventulanites, etc.), while others are particularly beautiful specimens (azurite, adamsite, smithsonite, etc.). There are also rare specimens of the famous "slag minerals".
In addition to the minerals exhibited, one can also see objects related to the extraction and refining of ores (lead ingots, slag cones, lead monoxides, types of lead and slag, digging implements and lamps, apparatus used for the transportation of ores, A. Kordellas walking stick, etc.).
Lavrion is a rugged area in eastern Attica, near Athens, where the ancient silver mines are located. During the classical era, these silver veins were used to finance the formidable navy used to defeat the Persians in the naval battle of Salamis, and helped spawn the Athenian empire of the Classical era.
There is evidence that mining activities took place as early as the 3d millennium BCE with small scale mining which continued on and off until the classical period. In 483 BCE the discovery of rich vein of silver in the vicinity of modern Ag. Konstantinos, otherwise known as Maronia, prompted large scale extraction and processing of the mineral by the Athenians.
The mines belonged to the city of Athens, and they were rented out to various individuals for a fixed percentage of the production. The most difficult work, including the extracting underground ore was done by slaves, many of whom lost their lives in the harsh process.
The wealth produced in the Lavrion mines was initially used at the insistence of Themistokles to construct a formidable navy of war triremes. Athens relied heavily on sea commerce for its wealth and on imports for food, so Themistokles argued that the navy would help Athens in it's long standing rivalry with the island of Aegina, and in the ongoing war with the Persian empire.
The Athenian navy proved to be of critical utility soon thereafter, when Xerxes invaded Greece with the Persian army by land and his navy by sea in 480 BCE. His huge Persian army met with defiance, but with initial success on land, but it was imperative that the Greek navy be defeated if the Persians were to supply their huge army by sea. The Athenian navy however, augmented with ships from allied states routed the larger Persian navy at the straits of Salamis.
The Lavrion mines thus had a direct and major effect on the creation of the subsequent Athenian empire, and on the celebration of a century of the Golden Age of Athenian democracy that followed.
The silver extracted from the mines was formed into the Athenian Tetrhadrachmon coin, which became the dominant commercial currency of the eastern Mediterranean during the classical era. These coins, along with the tribute paid by their allies in the Delian league, bestowing even more wealth upon Athenian citizens who used it to maintain their empire and to finance grand cultural projects.
The mines eventually declined during the Peloponnesian War (431-404 BCE) and stopped producing ore when after the Spartans captured the fort of Dekelia in 413 BCE and controlled access to the mines. Afterward, silver and lead extraction continued on and off throughout the subsequent centuries, but production never reached the volume produced during the Classical era.
The mines were abandoned in the 6th c. CE, and only reopened in 1859. The extraction of lead, manganese, and cadmium, in addition to smaller quantities of silver helped finance the newly formed country of Greece in the 19th c. CE.
The Lavrion mines were finally abandoned after all the ore deposits was exhausted in 1982.
Today, several abandoned mining sites sprinkle the rugged landscape west of the modern town of Lavrion. The most prominent archaeological site is located at Agios Konstantinos.