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Mineralogical Museum of Lavrion is a museum in Lavrion, Attica, Greece. 37°42′58″N24°03′04″E / 37.71611°N 24.05111°E )
A brief history of the museum
The Mineralogical Museum of Lavrion was inaugurated in 1986 through the efforts of the “Society for Lavrion region Studies” (the Scientific Society of Lavrion, in Greek “Etaireia Meleton Lavreotikis”, E.ME.L.), a non-profit cultural association founded in 1984 and recognized by the Ministry of Culture with the status of a private legal association (Government Gazette No. B/1401/22.10.2001, No. 54), grouping the scientific community of the city and its surroundings. The museum’s premises occupy a small industrial building, built in 1875, which constituted initially a part of the industrial ore washing complex of the “Metallurgical Company of Lavrion” (“Société des Usines du Laurium” or “Hellenic Company”, 1873-1927).
The museum has been dedicated to the memory of Andreas Cordellas, Greek mineralogist (1836-1909), whose scientific work paved the way to the re-exploitation, in the second half of the 19th century, of the ancient mines of Lavrion. His monument, created by the sculptor Irini Chariati (1918-2009), member of E.ME.L., was placed by E.ME.L. at the premises of the museum and unveiled on May 20, 1990.
Compiling the Collection
E.ME.L. commenced in 1984 the effort to compile its mineralogical collection by addressing requests to local families, who, to their knowledge, had in their possession minerals from the region.
In the last years, under our encouragement and counsel, the Municipality of Lavrion acquired two very important collections, which have come to enrich the contents of the Museum of E.ME.L. Also, Mr. Ath. Martinos has largely contributed to this end, being acclaimed by the Board of our Society, in recognition of his commitment, great donor and honorary Member of the Society. Finally, through monetary contributions and personal purchases of mineralogical collections, citizens and friends have incessantly helped to complete the contents of the museum. At this end, the acquisition and transfer to new premises, which will allow the presentation of the collection of the museum under appropriate museological conditions, constitutes a common target, both for E.ME.L. and the Municipality of Lavrion.
The Collection
The collection of the Mineralogical Museum of Lavrion comprises samples of minerals from the region of Lavrion, pieces unique both in quality and beauty. More than 610 species of minerals have been discovered in the subsoil of the region (amounting to 16% of the world’s known minerals), which is why the region of Lavrion has been rightly named “an inexhaustible natural mineral and chemical laboratory”.[ citation needed ]
In the reduced premises of the museum, 740 mineral samples (representing 220 mineral species) are presented in showcases, classified either according to their chemical composition, e.g. sulphates, sulfides, oxides, silicates et al. (following the J. Dana system), or in cabinets comprising general samples or collections of major donors. The collection of the museum, including more than 3,200 samples, continuously grows. The polymorphy, the particular crystallization, the iridescence and the amazing colours of the minerals surprise the visitors upon arrival. Aragonites, azurites, smithsonites from Lavrion are classified among the most beautiful of the world, whilst major Museums abroad would be proud to behold among their exhibits, samples of annabergite, spangolite, takovite, ktenasite, kapellasite, glaucocerinite, a.o., such as presented here.
The collection of the museum also comprises ancient and modern miners’ tools, together with lead “turtles” – produced for commercialization – their moulds and other products derived from the smelting process. The visitor can also admire silver coins of ancient Athens (5th-4th c. b.C.) known as the “Lavrion owls”, according to Aristophanes. Huge rocks of slag, used as blocks in the port of the city, are on display in the surrounding grounds, together with loading barrels for vessels affected to the transportation of metals or coal, as well as a wagonette on rails recovered from a semi-destroyed mining gallery (Adami) in the nearby region of Plaka.
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Lavrio, Lavrion or Laurium is a town in southeastern part of Attica, Greece. It is part of Athens metropolitan area and the seat of the municipality of Lavreotiki. Laurium was famous in Classical antiquity for its silver mines, which was one of the chief sources of revenue of the Athenian state. The metallic silver was mainly used for coinage. The Archaeological Museum of Lavrion shows much of the story of these mines.
Nephrite is a variety of the calcium, magnesium, and iron-rich amphibole minerals tremolite or actinolite (aggregates of which also make up one form of asbestos). The chemical formula for nephrite is Ca2(Mg, Fe)5Si8O22(OH)2. It is one of two different mineral species called jade. The other mineral species known as jade is jadeite, which is a variety of pyroxene. While nephrite jade possesses mainly grays and greens (and occasionally yellows, browns, black or whites), jadeite jade, which is rarer, can also contain blacks, reds, pinks and violets. Nephrite jade is an ornamental stone used in carvings, beads, or cabochon cut gemstones. Nephrite is also the official state mineral of Wyoming.
Tridymite is a high-temperature polymorph of silica and usually occurs as minute tabular white or colorless pseudo-hexagonal crystals, or scales, in cavities in felsic volcanic rocks. Its chemical formula is SiO2. Tridymite was first described in 1868 and the type location is in Hidalgo, Mexico. The name is from the Greek tridymos for triplet as tridymite commonly occurs as twinned crystal trillings (compound crystals comprising three twinned crystal components).
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Agardite is a mineral group consisting of agardite-(Y), agardite-(Ce), agardite-(Nd), and agardite-(La). They comprise a group of minerals that are hydrous hydrated arsenates of rare-earth elements (REE) and copper, with the general chemical formula (REE,Ca)Cu6(AsO4)3(OH)6·3H2O. Yttrium, cerium, neodymium, lanthanum, as well as trace to minor amounts of other REEs, are present in their structure. Agardite-(Y) is probably the most often found representative. They form needle-like yellow-green (variably hued) crystals in the hexagonal crystal system. Agardite minerals are a member of the mixite structure group, which has the general chemical formula Cu2+6A(TO4)3(OH)6·3H2O, where A is a REE, Al, Ca, Pb, or Bi, and T is P or As. In addition to the four agardite minerals, the other members of the mixite mineral group are calciopetersite, goudeyite, mixite, petersite-(Ce), petersite-(Y), plumboagardite, and zálesíite.
Mixite is a rare copper bismuth arsenate mineral with formula: BiCu6(AsO4)3(OH)6·3(H2O). It crystallizes in the hexagonal crystal system typically occurring as radiating acicular prisms and massive encrustations. The color varies from white to various shades of green and blue. It has a Mohs hardness of 3.5 to 4 and a specific gravity of 3.8. It has an uneven fracture and a brilliant to adamantine luster.
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Arthurite is a mineral composed of divalent copper and iron ions in combination with trivalent arsenate, phosphate and sulfate ions with hydrogen and oxygen. Initially discovered by Sir Arthur Russell in 1954 at Hingston Down Consols mine in Calstock, Cornwall, England, arthurite is formed as a resultant mineral in the oxidation region of some copper deposits by the variation of enargite or arsenopyrite. The chemical formula of Arthurite is CuFe23+(AsO4,PO4,SO4)2(O,OH)2·4H2O.
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Matlockite is a rare lead halide mineral, named after the town of Matlock in Derbyshire, England, where it was first discovered in a nearby mine. Matlockite gives its name to the matlockite group which consists of rare minerals of a similar structure.
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Serpierite (Ca(Cu,Zn)4(SO4)2(OH)6·3H2O) is a rare, sky-blue coloured hydrated sulfate mineral, often found as a post-mining product. It is a member of the devilline group, which has members aldridgeite (Cd,Ca)(Cu,Zn)4(SO4)2(OH)6·3H2O, campigliaite Cu4Mn2+(SO4)2(OH)6·4H2O, devilline CaCu4(SO4)2(OH)6·3H2O, kobyashevite Cu5(SO4)2(OH)6·4H2O, lautenthalite PbCu4(SO4)2(OH)6·3H2O and an unnamed dimorph of devilline. It is the calcium analogue of aldridgeite and it is dimorphous with orthoserpierite CaCu4(SO4)2(OH)6·3H2O.
Katsarosite is a rarely occurring mineral from the mineral class of organic compounds with the chemical composition Zn(C2O4)·2H2O and is therefore a water-containing zinc(II) oxalate or the zinc salt of oxalic acid.
Andreas Kordellas was a Greek mineralogist and mining engineer.