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When was Porphyry of Gaza born?
Porphyry of Gaza was born in 347.
What is a porphyry sarcophagus?
Porphyry is a type of granite that comes in various colors, that the Egyptians were known to appreciate carving things like coffins in. A stone coffin carved of porphyry is a porphyry sarcophagus.
When did Porphyry of Gaza die?
Porphyry of Gaza died on 420-02-26.
Is porphyry extrusive or intrusive?
Porphyry can be either extrusive or intrusive. Extrusive porphyry forms from lava that cools quickly on the Earth's surface, while intrusive porphyry forms from magma that cools more slowly beneath the surface. Both types of porphyry have distinctive large crystals (phenocrysts) embedded in a fine-grained matrix.
How many types of porphyry are there?
Lots
What is the mohs hardness of porphyry?
10
Is porphyry igneous sedimentary or metamorpic?
its igenoeus
How fast does porphyry cool?
very slowley
Did porphyry cool quickly or slowly?
Porphyry cooled slowly, allowing large crystals to form within a fine-grained matrix. This slow cooling process gives porphyry its characteristic appearance of large crystals embedded in a finer grained groundmass.
What minerals are found in porphyry?
Mostly feldspar and quartz
Where did the large crystals form in the porphyry rock?
beneath earth's surface
What has the author John Russell Loudon written?
John Russell Loudon has written: 'The origin of the porphyry and the porphyry-like rocks of Elbow, New Brunswick' -- subject(s): Porphyry, Geology 'Petrographic criteria for the recognition of porphyritisation' -- subject(s): Petrology, Porphyry
