0
What else can I help you with?
This igneous texture is characterized by two distinctively different crystal sizes?
The igneous texture characterized by two distinctively different crystal sizes is known as porphyritic texture. Porphyritic rocks have larger crystals (phenocrysts) surrounded by a fine-grained matrix (groundmass), indicating two different stages of cooling within the magma.
Igneous rocks are classified based upon their mineral composition and?
And their texture, which can be aphanitic, phaneritic, glassy, or porphyritic. mineral composition and crystal texture
What is the texture of adakite?
Typically porphyritic with hbl phenocrysts.
Magma cooling in 2 stages slow and then fast what is the resulting texture?
The resulting texture is porphyritic. The slower cooling stage allows large crystals to form (phenocrysts), while the faster cooling stage results in the formation of smaller crystals in the remaining magma (groundmass). This gives the rock a mixture of large and small crystals, creating a porphyritic texture.
Is felsic porphyritic extrusive?
Felsic porphyritic rocks can be extrusive if they are formed from volcanic eruptions. These rocks have a high silica content and typically contain large crystals (phenocrysts) embedded in a fine-grained matrix. Examples of felsic porphyritic extrusive rocks include rhyolite and dacite.
What Mineral alignment in a metamorphic rock usually gives the rock a porphyritic texture?
A porphyritic texture can be a feature of igneous rocks, but 'porphyritic' is not used to describe metamorphic rock texture. Metamorphic rocks can be foliated or non-foliated, terms used to describe mineral alignment or banding, or the lack thereof.
The igneous rock texture characterized by two distinctly different crystal sizes is the texture?
Porphyritic
This igneous texture is characterized by two distinctively different crystal sizes?
The igneous texture characterized by two distinctively different crystal sizes is known as porphyritic texture. Porphyritic rocks have larger crystals (phenocrysts) surrounded by a fine-grained matrix (groundmass), indicating two different stages of cooling within the magma.
Igneous rocks are classified based upon their mineral composition and?
And their texture, which can be aphanitic, phaneritic, glassy, or porphyritic. mineral composition and crystal texture
Is granite rock porphyritic?
Granite rock is not porphyritic. It is phaneritic because it has a coarse-grained texture.
What is the texture of an igneous rock from magma that cools in two stages?
It's texture is porphyritic
Is rhyolite's texture a aphanitic?
Rhyolite may be aphanitic or porphyritic.
What is the texture of adakite?
Typically porphyritic with hbl phenocrysts.
What is a porphyritic texture?
A porphyritic texture is displayed in an igneous rock containing large isolated crystals (phenocrysts) in a mass of fine textured crystals . Porphyritic texture indicates that a magma has gone through a two stage cooling process. The magma has cooled sufficiently underground to allow some minerals to crystallize and grow in size; the magma is then expelled above ground where the remaining liquid magma solidifies quickly, allowing only small crystals to develop.See link below for a picture of a porphyritic texture in a rock.
Why is mineral texture an important aspect of petrography?
Mineral texture provides clues as to the origin of the rock particles and the processes which lead to the rock's formation. Texture would include the size and arrangement of the mineral crystals or particles found in the body of a rock.
Are sedimentary rocks that form when minerals come out of a solution classified as porphyritic?
No. I believe they are called chemical precipitate sedimentary rocks. Yes, I'm sure they're called that. Absolutely! Porphyritic is a term usually applied to igneous rocks, having to do with mineral formation and rock texture.
What texture does a volcanic rock have?
Textures of volcanic rocks include aphantitic (mineral grains are present but microscopic) , porphyritic (some grains are visible to the naked eye), glassy (all or much of the rock lacks a crystalline structure), and vesicular (solidified gas bubbles are present).
