Mons Porphyrites (today Jabal Abu Dukhkhan) is the mountainous site of a group of ancient quarries in the Red Sea Hills of the Eastern Desert in Egypt. Under the Roman Empire, they were the only known source of the purple "imperial" variety of porphyry. They were exploited between the 1st and 5th centuries AD. The other imperial quarries in the Eastern Desert were Mons Claudianus, and . These four quarries were probably under a unified administration, since the same procurator metallorum is found in more than one.
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| - Mons Porphyrites (de)
- Mons Porphyrites (en)
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| - Mons Porphyrites ist ein römischer Steinbruch in der östlichen Wüste Ägyptens. Er liegt etwa 45 Kilometer vom Meer entfernt an der Straße zwischen Maximianopolis/Kainopolis im Niltal und Myos Hormos ( am Roten Meer), 55 Kilometer westlich von Hurghada am nordöstlichen Steilhang des -Gebirges (Rauchberge), dessen höchster Berg 1626 Meter hoch ist. Das Gebirge selbst besteht aus präkambrischen Ergussgesteinen. Im Steinbruch selbst wurde ein purpurroter oder schwarzer Porphyr (Andesit) mit weißen oder rosa Einsprenglingen aus Feldspat abgebaut, der extrem selten und damit wertvoll war. Der kaiserliche Porphyr findet sich nur in einem kleinen Bereich von etwa sechs Quadratkilometern Ausdehnung. Andere Abbaustellen (Barton) lieferten schwarzen Porphyr. Eine zweite Variante ist grünschwarz mit w (de)
- Mons Porphyrites (today Jabal Abu Dukhkhan) is the mountainous site of a group of ancient quarries in the Red Sea Hills of the Eastern Desert in Egypt. Under the Roman Empire, they were the only known source of the purple "imperial" variety of porphyry. They were exploited between the 1st and 5th centuries AD. The other imperial quarries in the Eastern Desert were Mons Claudianus, and . These four quarries were probably under a unified administration, since the same procurator metallorum is found in more than one. (en)
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| - Mons Porphyrites ist ein römischer Steinbruch in der östlichen Wüste Ägyptens. Er liegt etwa 45 Kilometer vom Meer entfernt an der Straße zwischen Maximianopolis/Kainopolis im Niltal und Myos Hormos ( am Roten Meer), 55 Kilometer westlich von Hurghada am nordöstlichen Steilhang des -Gebirges (Rauchberge), dessen höchster Berg 1626 Meter hoch ist. Das Gebirge selbst besteht aus präkambrischen Ergussgesteinen. Im Steinbruch selbst wurde ein purpurroter oder schwarzer Porphyr (Andesit) mit weißen oder rosa Einsprenglingen aus Feldspat abgebaut, der extrem selten und damit wertvoll war. Der kaiserliche Porphyr findet sich nur in einem kleinen Bereich von etwa sechs Quadratkilometern Ausdehnung. Andere Abbaustellen (Barton) lieferten schwarzen Porphyr. Eine zweite Variante ist grünschwarz mit weißen bis schwach grünlichen Phänokristallen, die bis zu fünf Millimeter groß sind. (de)
- Mons Porphyrites (today Jabal Abu Dukhkhan) is the mountainous site of a group of ancient quarries in the Red Sea Hills of the Eastern Desert in Egypt. Under the Roman Empire, they were the only known source of the purple "imperial" variety of porphyry. They were exploited between the 1st and 5th centuries AD. The other imperial quarries in the Eastern Desert were Mons Claudianus, and . These four quarries were probably under a unified administration, since the same procurator metallorum is found in more than one. The quarries were discovered by Caius Cominus Leugas in AD 18. Their exploitation can be traced by hundreds of ostraca from not long after until the 430s. They were accessible only by means of a circuitous branch of the road between Caene on the Nile and the Roman fort on the Red Sea coast (today ). The actual quarries were spread out over 9 square kilometres (3.5 sq mi). There were five dispersed villages for workers and a central complex at Wadi Abu Ma'amel 630 metres (2,070 ft) above sea level. The highest quarries were at Rammius at 1,438 metres (4,718 ft). Quarried stone had to be dropped down slipways to the wadi below. The central complex had a workers' settlement, a fort, temples to Sarapis and Isis Megiste, a bath with a hypocaust and a cemetery. The temple of Isis can be dated to 113 and that of Sarapis to 117–119. There is evidence for blacksmithing in the workers' area. A second temple to Isis Myrionyma, dating to 137–138, lay on the other side of the wadi. The central complex had two wells and large cistern for water storage in the fort. The earliest settlement, where an inscription of Cominus Leugas is found, contains a temple to Pan. Several of the villages were only occupied into the 2nd century, but there are later tombstones, pottery and coins from the higher quarries. A tower at the central complex allowed for visual communication with even the most distant posts. Besides the main fort, there were also fortlets at Badia, Umm Sidri and Belia. Mons Porphyrites produced black porphyry as well as the imperial porphyry for which it is most famous. The latter was used in Rome and Constantinople for decorative purposes, especially in imperial sarcophagi. (en)
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