Lapis Lacedaemonius ( la, stone from

Lacedaemon Sparta (Doric Greek: Σπάρτα, ''Spártā''; Attic Greek: Σπάρτη, ''Spártē'') was a prominent city-state in Laconia, in ancient Greece. In antiquity, the city-state was known as Lacedaemon (, ), while the name Sparta referred ...

), also known as Spartan basalt, is a form of

andesite Andesite () is a volcanic rock of intermediate composition. In a general sense, it is the intermediate type between silica-poor basalt and silica-rich rhyolite. It is fine-grained (aphanitic) to porphyritic in texture, and is composed predo ...

or volcanic rock known today only from a single source in the village of

Krokees Krokees ( el, Κροκεές, before 1927: Λεβέτσοβα - ''Levetsova'') is a village and a former municipality in Laconia, Peloponnese, Greece. Since the 2011 local government reform it is part of the municipality Evrotas, of which it is a m ...

on the Peloponnese in Greece. In addition, ancient sources mention a quarry of lapis Lacedaemonius in

Taygetus The Taygetus, Taugetus, Taygetos or Taÿgetus ( el, Ταΰγετος, Taygetos) is a mountain range on the Peloponnese peninsula in Southern Greece. The highest mountain of the range is Mount Taygetus, also known as "Profitis Ilias", or "Prophet ...

. The stone has a dark green colour, speckled with elements shifting from yellow to light green. Occasionally, the speckles have crystallised in a way that creates rosette-like patterns. It is rated as having a hardness of six or higher on the

Mohs scale of mineral hardness The Mohs scale of mineral hardness () is a qualitative ordinal scale, from 1 to 10, characterizing scratch resistance of various minerals through the ability of harder material to scratch softer material. The scale was introduced in 1812 by t ...

. It appears in comparatively small blocks. It is known in Italian as ''porfido verde antico'' and in German as ''Krokeischer Stein''. The stone is known to have been processed by

Neanderthal Neanderthals (, also ''Homo neanderthalensis'' and erroneously ''Homo sapiens neanderthalensis''), also written as Neandertals, are an extinct species or subspecies of archaic humans who lived in Eurasia until about 40,000 years ago. While the ...

s. In slightly more recent times, lapis Lacedaemonius has been used for making

Minoan sealstone Minoan seals are impression seals in the form of carved gemstones and similar pieces in metal, ivory and other materials produced in the Minoan civilization. They are an important part of Minoan art, and have been found in quantity at specific s ...

s and vases, both

Minoan The Minoan civilization was a Bronze Age Aegean civilization on the island of Crete and other Aegean Islands, whose earliest beginnings were from 3500BC, with the complex urban civilization beginning around 2000BC, and then declining from 1450B ...

and Mycenean. It also was used as an element in decorative elements created with

opus sectile ''Opus sectile'' is a form of pietra dura popularized in the ancient and medieval Roman world where materials were cut and inlaid into walls and floors to make a picture or pattern. Common materials were marble, mother of pearl, and glass. T ...

technique (with examples known from

Ostia Antica Ostia Antica ("Ancient Ostia") is a large archaeological site, close to the modern town of Ostia, that is the location of the harbour city of ancient Rome, 25 kilometres (15 miles) southwest of Rome. "Ostia" (plur. of "ostium") is a derivation ...

and

Nemi Nemi is a town and ''comune'' in the Metropolitan City of Rome (central Italy), in the Alban Hills overlooking Lake Nemi, a volcanic crater lake. It is northwest of Velletri and about southeast of Rome. The town's name derives from the Lat ...

) during Roman times, as well as in several churches in

Rome , established_title = Founded , established_date = 753 BC , founder = King Romulus (legendary) , image_map = Map of comune of Rome (metropolitan city of Capital Rome, region Lazio, Italy).svg , map_caption ...

(e.g.

Santa Prassede The Basilica of Saint Praxedes ( la, Basilica Sanctae Praxedis, it, Basilica di Santa Prassede all’Esquillino), commonly known in Italian as Santa Prassede, is an early medieval titular church and minor basilica located near the papal basilic ...

) and in the pavement of

St. Peter's Square Saint Peter's Square ( la, Forum Sancti Petri, it, Piazza San Pietro ,) is a large plaza located directly in front of St. Peter's Basilica in Vatican City, the papal enclave inside Rome, directly west of the neighborhood ( rione) of Borgo. B ...

. Its use is mentioned by

Pausanias Pausanias ( el, Παυσανίας) may refer to: *Pausanias of Athens, lover of the poet Agathon and a character in Plato's ''Symposium'' *Pausanias the Regent, Spartan general and regent of the 5th century BC * Pausanias of Sicily, physician of t ...

. During the

Middle Ages In the history of Europe, the Middle Ages or medieval period lasted approximately from the late 5th to the late 15th centuries, similar to the post-classical period of global history. It began with the fall of the Western Roman Empire ...

it was employed in mosaics in e.g. Palermo,

Constantinople la, Constantinopolis ota, قسطنطينيه , alternate_name = Byzantion (earlier Greek name), Nova Roma ("New Rome"), Miklagard/Miklagarth (Old Norse), Tsargrad ( Slavic), Qustantiniya ( Arabic), Basileuousa ("Queen of Cities"), Megalopolis ( ...

, and

Santiago de Compostela Santiago de Compostela is the capital of the autonomous community of Galicia, in northwestern Spain. The city has its origin in the shrine of Saint James the Great, now the Cathedral of Santiago de Compostela, as the destination of the Way of S ...

. Furthermore, Roman and Byzantine decorative stones frequently were reused up until the eighteenth century. For example, in St. Mark's Basilica,

Venice Venice ( ; it, Venezia ; vec, Venesia or ) is a city in northeastern Italy and the capital of the Veneto region. It is built on a group of 118 small islands that are separated by canals and linked by over 400 bridges. The isla ...

and also as far away from the

Mediterranean Sea The Mediterranean Sea is a sea connected to the Atlantic Ocean, surrounded by the Mediterranean Basin and almost completely enclosed by land: on the north by Western and Southern Europe and Anatolia, on the south by North Africa, and on the ...

as in

Westminster Abbey Westminster Abbey, formally titled the Collegiate Church of Saint Peter at Westminster, is an historic, mainly Gothic church in the City of Westminster, London, England, just to the west of the Palace of Westminster. It is one of the Unite ...

London London is the capital and List of urban areas in the United Kingdom, largest city of England and the United Kingdom, with a population of just under 9 million. It stands on the River Thames in south-east England at the head of a estuary dow ...

. The stone from Krokees comes from a lava dome approximately 230 million years old. Its light spots are

plagioclase Plagioclase is a series of tectosilicate (framework silicate) minerals within the feldspar group. Rather than referring to a particular mineral with a specific chemical composition, plagioclase is a continuous solid solution series, more pro ...

, which over time has turned into

albite Albite is a plagioclase feldspar mineral. It is the sodium endmember of the plagioclase solid solution series. It represents a plagioclase with less than 10% anorthite content. The pure albite endmember has the formula . It is a tectosilicate ...

and

epidote Epidote is a calcium aluminium iron sorosilicate mineral. Description Well developed crystals of epidote, Ca2Al2(Fe3+;Al)(SiO4)(Si2O7)O(OH), crystallizing in the monoclinic system, are of frequent occurrence: they are commonly prismatic in hab ...

. In places, iron minerals have oxidized into hematite, giving it a reddish tone. Geologically similar rock, equally exploited during antiquity, may be found on

Samothrace Samothrace (also known as Samothraki, el, Σαμοθράκη, ) is a Greek island in the northern Aegean Sea. It is a municipality within the Evros regional unit of Thrace. The island is long and is in size and has a population of 2,859 (2011 ...

References

External links

{{Commonscat, Verde Antico
Porfido Verde Antico
Article about Lapis Lacedaemonius in ''Architettura di pietra''. (in Italian) Volcanic rocks Geology of Greece Laconia