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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, with the larger crystals known as phenocrysts
- What is a Porphyritic Texture and How Is It Formed?
The porphyritic texture is an igneous rock texture characterized by well-formed, larger crystals in a finer-grained matrix The consistently larger crystals are known as phenocrysts, while the finer-grained matrix is known as groundmass
- Porphyritic – 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, surrounded by a matrix of considerably smaller crystals or igneous glass, called groundmass
- Porphyry - Igneous Rocks - Sandatlas
Porphyry is an igneous rock characterized by porphyritic texture Porphyritic texture is a very common texture in igneous rocks in which larger crystals (phenocrysts) are embedded in a fine-grained groundmass
- What Is Porphyritic Texture in Rocks and How Does It Form
Porphyritic rocks form from two-stage cooling when crystallization starts outside the eutectic composition or when minerals crystallize and nucleate at different rates Also, this texture can result in sudden loss of water-rich fluids or volatiles
- PORPHYRITIC Definition Meaning - Merriam-Webster
The meaning of PORPHYRITIC is of or relating to porphyry
- Porphyry Deposits - Geology Science
Porphyry deposits are a type of mineral deposit that form from large-scale hydrothermal systems associated with intrusive igneous rocks They are characterized by the presence of porphyritic rocks that contain large crystals (phenocrysts) surrounded by a fine-grained matrix (groundmass)
- Porphyry | geological feature | Britannica
They commonly have a porphyritic texture, i e , larger crystals within a finer-grained groundmass, indicating two periods of crystallization (A porphyry is an igneous rock containing conspicuous crystals, called phenocrysts, surrounded by a matrix of finer-grained minerals or glass or both )
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