Porphyry is a reddish-brown to purple igneous rock containing large phenocrysts of various minerals embedded in a fine-grained matrix 0
From Old French porfire, from Italian porfiro and in some cases directly from Latin porphyrites 0
Durable Rock, Hard Rock 0
Fine Grained Rock, Opaque Rock 0
Black, Brown, Colourless, Green, Grey, Red, Rust, White 0
Decorative Aggregates, Interior Decoration 0
Garden Decoration, Paving Stone 0
Artifacts, Monuments, Sculpture 0
Creating Artwork, Gemstone, Jewelry 0
Generally rough to touch, Is one of the oldest rock, Surfaces are often shiny 0
Archaeological Significance
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Porphyry is formed in two stages: the magma cools slowly deep within the crust or the magma is cools rapidly as it erupts from a volcano, creating small grains that are usually invisible to naked eye. 0
Biotite, Chert, Feldspar, Garnet, Graphite, Quartz, Silica 0
Aluminium Oxide, CaO, Iron(III) Oxide, Potassium Oxide, MgO, Sodium Oxide, Silicon Dioxide, Titanium Dioxide 0
Burial Metamorphism, Cataclastic Metamorphism, Contact Metamorphism, Hydrothermal Metamorphism, Impact Metamorphism, Regional Metamorphism 0
Biological Weathering, Chemical Weathering, Not Registered 0
Chemical Erosion, Coastal Erosion, Glacier Erosion 0
Heat Resistant, Impact Resistant 0
Deposits in Eastern Continents
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China, Kazakhstan, South Korea, Thailand, Turkey, Vietnam 0
Egypt, Ethiopia, Ghana, South Africa 0
Finland, France, Germany, Great Britain, Hungary, Iceland, Ireland, Italy, Netherlands, Norway, Romania, Sweden, Switzerland 0
Deposits in Western Continents
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Canada, Cuba, Jamaica, USA 0
Bolivia, Brazil, Colombia, Ecuador, Paraguay 0
Deposits in Oceania Continent
0
New South Wales, New Zealand, Western Australia 0
Information about Porphyry
Rocks are naturally occurring solids which are composed of minerals & have been used by humans since ages. From Stone Age, rocks are used for various purposes. Also, the metals and minerals found in rock play an important role in our life. Get to know all the Porphyry Uses. We have provided you with all information about Porphyry rock here. Porphyry is a reddish-brown to purple igneous rock containing large phenocrysts of various minerals embedded in a fine-grained matrix. Porphyry is available in black, brown, colourless, green, grey, red, rust, white colors. The streak of a rock is the color of powder produced when it is dragged across an unweathered surface. The streak of Porphyry is white. Get to know more about Porphyry rock and characteristics of Porphyry rock in the next sections.