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What do the large crystals in this igneous rock tell about the rock?
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∙ 13y ago
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What do the large crystals in igneous rocks tell about the rock?
That it cooled very slowly.
What does the presence of tiny crystals in a piece of igneous rock tell you about it?
Tiny crystals in the igneous rock tells you it cooled quickley.
What does the presence of large crystals tell you about the rock's formation?
It cooled slowly, forming larger crystals.
How can you tell the difference between an igneous rock that formed above ground and one that formed below?
Usually, the determining factor is the size of the mineral crystals in the rock. Igneous rocks that have solidified above ground cool quickly and have less time for larger crystals to grow.
How do igneous rocks differ from one another?
extrusive and intrusive OR plutonic and volcanic
How can you tell that a rock is a igneous rock?
Well The Igneous Rock: When it Forms Underground the Pressure combines with Large crystals :)
What do the large crystals in igneous rocks tell about the rock?
That it cooled very slowly.
How can you tell if a intrusive rock forms?
Large crystals are diagnostic of an intrusive igneous rock, as large crystals form as the source magma cools slowly.
What does the presence of tiny crystals in a piece of igneous rock tell you about it?
Tiny crystals in the igneous rock tells you it cooled quickley.
What does the presence of large crystals tell you about the rock's formation?
It cooled slowly, forming larger crystals.
What does grain size tell you about the orgin and cooling time of an igneous rock?
The larger the crystals, the more time it had to cool because the crystals had more time to grow
How can you tell the difference between an igneous rock that formed above ground and one that formed below?
Usually, the determining factor is the size of the mineral crystals in the rock. Igneous rocks that have solidified above ground cool quickly and have less time for larger crystals to grow.
What does grain-size tell you about the cooling history of a rock?
Slower rates of cooling will create larger crystals. Rapid cooling allows little time for element accumulation in the crystal, therefore, the crystals created will be smaller. Larger, visible crystals in igneous rock indicate that the magma was slow cooling, usually at depth. Much smaller crystals in igneous rock indicate rapid cooling of lava, usually at or near the surface. Crystals in igneous rock will grow larger and have more time to accumulate material for their growth the more time they have at their crystallization temperature.
How can you tell limestone is igneous?
Limestone is not an igneous rock, it is sedimentary.
How do igneous rocks differ from one another?
extrusive and intrusive OR plutonic and volcanic
Could you tell me stuff about the rock Geode?
Geodes are rock cavities with internal crystal formations, usually made of quartz crystals. Some geodes are completely solid because they are filled with crystals. These are called "nodules". Geodes can form in gas bubbles in igneous rock, or in rounded cavities in sedimentary rock. Most geodes contain clear or white quartz crystals, but purple amethyst crystals are also common.
How can you tell if it is an igneous rock?
It will be in a volcanic or sediment rock.
