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Are crystals intrusive or extrusive?
extrusive
How can you determine if an igneous rock has had an intrusive or extrusive organ?
by the size of the crystals, big crystals intrusive, small crystals extrusive
Is an intrusive crystal bigger than an extrusive crystal?
Typically, intrusive crystals are larger than extrusive crystals because intrusive rocks cool slowly beneath the Earth's surface, allowing larger crystals to form, while extrusive rocks cool quickly at the surface, producing smaller crystals.
How willl the sizen of crystals in granite b different from the size of the crystals in basalt?
The will be large in an extrusive granite and fine in an intrusive basalt.
What is the comparison of granite and basalt in terms of origin and texture which is intrusive and which is extrusive?
Basalt can't see crystals and basalt is extrusive. Granite you can see the crystals and is intrusive.
What is a black intrusive rock with small crystals?
Intrusive rock normally has visible crystals. Extrusive igneous rock has small crystals. A black extrusive igneous rock with small crystals could be basalt.
Which igneous rock can be intrusive and extrusive?
A porphyritic igneous rock demonstrates some extrusive characteristics and some intrusive characteristics. The appearance of phenocrysts (larger crystals) in a fine matrix (small crystals) indicates that the magma had time to cool slowly enough underground to form larger crystals before being erupted at or near the surface.
Do all intrusive igneous rocks have crystals?
Yes. All intrusive igneours rocks and many extrusive rocks have crystals.
Is porphyry extrusive or intrusive?
Porphyry can be either extrusive or intrusive. Extrusive porphyry forms from lava that cools quickly on the Earth's surface, while intrusive porphyry forms from magma that cools more slowly beneath the surface. Both types of porphyry have distinctive large crystals (phenocrysts) embedded in a fine-grained matrix.
Is Rhyolite Porphyry an intrusive or extrusive rock?
Rhyolite Porphyry is an intrusive rock, formed from the slow cooling of magma underground. It is characterized by large crystals (phenocrysts) surrounded by a fine-grained matrix.
Can magmas be classified as intrusive or extrusive?
Yes, magmas can be classified as intrusive or extrusive. Intrusive magmas form underground as the magma cools slowly, resulting in large crystals. Extrusive magmas, on the other hand, cool quickly on the Earth's surface, leading to fine-grained or glassy textures like obsidian or basalt.
How can you determine if a igneous rock has had an intrusive or extrusive origin?
== Grain size. Most intrusive igneous rocks will have visible crystals. Crystals in most extrusive igneous rocks are not easily visible.
