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Does a porphyritic texture include two different sizes of mineral grains?
Wiki User
∙ 10y ago
Yes
Wiki User
∙ 10y ago
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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 porphyritic texture is not a feature of sedimentary rocks?
Porphyritic texture is a feature of some igneous rocks, not sedimentary rocks.
This igneous texture is characterized by two distinctively different crystal sizes?
Porphyritic texture is characterised by two distinctively different crystal sizes. Please see link.
What is the texture of adakite?
Typically porphyritic with hbl phenocrysts.
What kind of texture does a rock with large crystals scattered on a background of much smaller crystals have?
A porphyritic texture.
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.
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
The igneous rock texture characterized by two distinctly different crystal sizes is the texture?
Porphyritic
Is porphyritic texture is not a feature of sedimentary rocks?
Porphyritic texture is a feature of some igneous rocks, not sedimentary rocks.
Is granite rock porphyritic?
Granite rock is not porphyritic. It is phaneritic because it has a coarse-grained texture.
This igneous texture is characterized by two distinctively different crystal sizes?
Porphyritic texture is characterised by two distinctively different crystal sizes. Please see link.
What is the texture of adakite?
Typically porphyritic with hbl phenocrysts.
What is the texture of an igneous rock from magma that cools in two stages?
It's texture is porphyritic
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.
Is rhyolite's texture a aphanitic?
Rhyolite may be aphanitic or porphyritic.
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 kind of texture does a rock with large crystals scattered on a background of much smaller crystals have?
A porphyritic texture.
