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porphyritic

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Porphyritic - Wikipedia
Porphyritic is an adjective used in geology to describe igneous rocks with a distinct difference in the size of mineral crystals. en.wikipedia.org
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Porphyritic texture - ALEX STREKEISEN
Porphyritic texture is an igneous rock texture in which large crystals are set in a finer-grained or glassy groundmass. www.alexstrekeisen.it
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Porphyritic texture - Geology is the Way
The porphyritic texture is a type of texture occurring in volcanic and intrusive igneous rocks defined by the presence of larger crystals, called phenocrysts. geologyistheway.com
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porphyritic
porphyritic, a. (pɔːfɪˈrɪtɪk) Also 7 -etick. [ad. med.L. porphyrīticus, f. L. porphyrītēs porphyrite; so F. porphyritique. The classical L. was porphyreticus.] Of or pertaining to the porphyry of the ancients; of the nature or structure of the porphyry of modern mineralogists; spec. containing disti... Oxford English Dictionary
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PORPHYRITIC Definition & Meaning - Merriam-Webster
1. of or relating to porphyry 2. having distinct crystals (as of feldspar) in a relatively fine-grained base. www.merriam-webster.com
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Porphyritic Textures with Fine-Grained Groundmasses
This porphyritic texture indicates that the magma sat and cooled a bit below the Earth's surface, thus giving time for the large crystals to grow, before ... sites.pitt.edu
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Igneous rocks - Geology - rocks and minerals
Porphyritic - This texture describes a rock that has well-formed crystals visible to the naked eye, called phenocrysts, set in a very fine grained or glassy ... rocksminerals.flexiblelearning.auckland.ac.nz
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Porphyritic Rhyolite | Geology 1501 | ECU
Porphyritic Rhyolite ; Type, Igneous Rock ; Texture, Porphyritic ; Origin, Extrusive/Volcanic ; Chemical Composition, Felsic ; Color, Light Green. geology.ecu.edu
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PORPHYRITIC Definition & Meaning - Dictionary.com
Porphyritic definition: of, pertaining to, containing, or resembling porphyry, its texture, or its structure.. See examples of PORPHYRITIC used in a ... www.dictionary.com
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Porphyritic Granite | Geology 1501 | ECU
Porphyritic Granite ; Type, Igneous Rock ; Texture, Porphyritic ; Origin, Intrusive/Plutonic ; Chemical Composition, Felsic ; Color, Predominately white. geology.ecu.edu
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Vitrophyre
A vitrophyre is a porphyritic volcanic rock in which phenocrysts are embedded in a glassy matrix. Vitrophyres are contrasted from typical porphyritic rocks in that the latter has both crystalline phenocrysts (larger grains) and a crystalline matrix wikipedia.org
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Tephrite
Tephrite is an igneous, volcanic (extrusive) rock, with aphanitic to porphyritic texture. wikipedia.org
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Halleflinta
Many examples are banded or striated; others contain porphyritic crystals of quartz which resemble those of the felsites and porphyries. Of its original nature there is some doubt, but its chemical composition and the occasional presence of porphyritic crystals indicate that it has affinities wikipedia.org
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Glomeroporphyritic
term glomeroporphyritic (also cumulophyritic) refers to the grouping of phenocrysts, not necessarily of the same mineral, into distinct clusters within porphyritic wikipedia.org
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Blairmorite
Blairmorite is a very rare porphyritic volcanic rock named after the community of Blairmore in southwestern Alberta, Canada. References Volcanic rocks Porphyritic rocks Crowsnest Pass, Alberta wikipedia.org
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