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If igneous rock cools off slowly then its mineral grains will be?
Wiki User
∙ 14y ago
Rough and coarse.
Wiki User
∙ 14y ago
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When igneous rocks from a volcanic eruption cools what does it form?
When igneous rocks from a volcanic eruption cool, they can form either intrusive or extrusive rocks. Intrusive igneous rocks form when magma cools slowly beneath the Earth's surface, resulting in larger mineral grains. Examples include granite and diorite. Extrusive igneous rocks form when lava cools quickly on the Earth's surface, resulting in smaller mineral grains. Examples include basalt and pumice.
What are large grains of intrusive rock that cools down slowly?
Intrusive Igneous rocks. Examples: obsidian, magma
Do Glassy igneous rocks form when magma cools so slowly that mineral crystals cannot grow?
The "glassy" igneous rock is called obsidian, and it occurs when the magma cools very rapidly.
What is the most important factor affecting the texture of an igneous rock?
The rate at which the lava or magma cools affects the grain size, or texture, of the rock. The faster a rock cools, the smaller the individual mineral grains within it remain. Examples are basalt and rhyolite, which cooled on the earth's surface and are very fine-grained and therefore have a finer texture. But the slower a rock cools, the larger the individual mineral grains within it can grow. The best example is granite, a very coarse-textured rock that cooled very slowly deep within the earth.
What igneous rocks that form from magna cools slowly?
Intrusive igneous rocks, like granite.
When igneous rocks from a volcanic eruption cools what does it form?
When igneous rocks from a volcanic eruption cool, they can form either intrusive or extrusive rocks. Intrusive igneous rocks form when magma cools slowly beneath the Earth's surface, resulting in larger mineral grains. Examples include granite and diorite. Extrusive igneous rocks form when lava cools quickly on the Earth's surface, resulting in smaller mineral grains. Examples include basalt and pumice.
Glassy igneous rocks form when magma cools too fast for mineral grains to grow?
yes
Do Glassy igneous rocks form when magma cools too fast for mineral grains to grow?
yes
What are large grains of intrusive rock that cools down slowly?
Intrusive Igneous rocks. Examples: obsidian, magma
Do Glassy igneous rocks form when magma cools so slowly that mineral crystals cannot grow?
The "glassy" igneous rock is called obsidian, and it occurs when the magma cools very rapidly.
Is the crystal in the igneous rock large if it cools slowly from magma?
Yes. Slow cooling magma produces larger mineral crystals.
What is a common igneous rock with coarse grains that forms when magma cools slowly underground it is extremely hard and durable good for building?
A Gabbro.
What is igneous rock that cools slowly beneath the ground?
Intrusive Igneous Rock.
Does an Extrusive Rock cool slowly?
Cools quickly, relative to intrusive igneous rock which cools slowly underground.
What type rock forms when magma cools and hardens?
Igneous Rock is formed when magma cools and hardens. It depends on whether it cools above ground or under ground for the size of the mineral crystals forming inside it.
What kind of mineral does magma form when it cools?
When magma cools, it forms igneous rock.
What rock formed when magma cools slowly?
Igneous Rock
