A porphyry is an igneous rock that exhibits porphyritc texture. Porphyritic texture is defined by multiple distinct grain sizes present in a single rock. An example would be an igneous rock with a fine grained igneous matrix and larger coarse grain crystals of quartz or feldspar suspended in the matrix. This is a result of multiple stages of cooling during the melt crystallization. First the melt is cooling slowly producing the larger crystals (called phenocrysts) and then the process is sped up causing the rest of the melt to cool rapidly forming the fine grained matrix.
Porphyry is a type of granite and has long been used in sculpture and for building ornamentation.
10
very slowley
I don't know about the rest of the world, but in Sweden the main porphyry supplier is/was Älvdalen, Dalarna. I heard it's the place with the most porphyry in the world but I don't know if that's just the locals exaggerating.
coarse grained and porphyry rock
Photosynthesis is not a spiritual term, it is a biological term.
Porphyry is actually a coarse-textured igneous rock in a mass of fine-grained igneous rocks, but in case you meant porphyria, it is a rare disease caused by heme, an important part of hemoglobin, not being created properly.
Porphyry of Gaza was born in 347.
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.
Porphyry of Gaza died on 420-02-26.
what is meant by the term catheterisation
What is meant by the term resistivity?
Explain what is meant by the term 'dementia.'
what is meant by the term identity politics
What is meant by the term organisation culture
Lots
10
What is meant by the term 'compaction'