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Igneous rocks usually contain the most crystals. The longer it takes the magma to cool, the larger the crystals. According to the Earth Science Reference Tables, pegmatite contains the largest crystals.
Wiki User
∙ 13y ago
Wiki User
∙ 12y agoAny of the three rock types (metamorphic, igneous, sedimentary) can exhibit large crystalline structures. Some of the largest crystalline structures in the mineral world are sedimentary in origin (see link below); many mineral assemblages in certain metamorphic rocks are also impressive in size; and, of course, many plutonic rocks possess large, visible mineral crystals.
Wiki User
∙ 11y agogranite has quite big crystals
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What is an example of an intrusive igneous rock with large crystals?
Porphyrite of any composition, granite, gabbro, diorite. Most intrusive igneous rocks have crystals large enough to see with the naked eye. Another term used to define an igneous rock with large crystals is coarse-grained.
Type of rocked formed when lave or magma cools?
A rock that is formed when magma cools is called a igneous rock.
Which statements best describes how rock formed a wall?
earthquakes made the rock cave in
What is a catchy title for a project on growing crystals?
rock on? crystal growth now made crystal clear?
What type of rock forms from sediment of different materials such as sand dirt mud clay gravel and stone?
Sedimentary rock - these are usually recognisable by their layers.Other types of rock include:Igneous rock - formed when magma cools, recognisable by their crystals scattered insideMetamorphic rock - rock which has been pressurised and heated, altering it.
What is the name of the rock that makes magnesium?
The Element Magnesium is an Igneous Rock. This meaning that it formed from cooling lava that may or may not have produced crystals. Magnesium would have formed these crystals.
What are forms of igneous rock?
Intrusive- Formed under the crust. Barley any Crystals. Extrusive- Formed out of the crust. More Crystals.
How is the size of crystals in an igneous rock related to the formation of a rock?
If an igneous rock is formed from slowly cooling magma under the ground, it has more time to form crystals and so the crystals it forms are much larger than igneous rock formed from more quickly cooling magma or lava.
What is the name of A dark rock with small crystals formed on the surface of the earth?
Most generally, an igneous rock with small crystals formed from the cooling of lava on the surface of the Earth would be classified as basalt.
How would a rock that formed from lava cooling on the Earth's surface compare with a rock that formed from magma cooling deep in the Earth's crust?
The rock that formed from lava would have smaller crystals than the rock that formed from magma.
Some crystals are formed from hot melted rock called?
magma
What are two types of igneous rock?
Two types of igneous rock are intrusive (also called plutonic) and extrusive. There is also porphyry rock which is partly intrusive and partly extrusive. Porphyry rock has large crystals embedded in a mass of much smaller crystals. The large crystals formed underground as does intrusive rock, and were carried in lava when it erupted. The mass of smaller crystals formed around the large crystals when the lava cooled quickly above ground, as does extrusive rock.
What does porphyrytic texture indicate about the story of an igneous rock?
it tells you that the igneous rock formed in two stages,stage one occurred deep into the earth were large crystals formed from and then it eruptedas a volcano in stage two were small crystals formed
Are sedimentary rocks formed because of water evaporating and leaving crystals behind?
Some sedimentary rock is formed this way; chemical sedimentary rock formed from evaporites, like rock salt, and rock gypsum.
Which would have larger crystals an igneous rock formed from magma below the surface or igneous rock cooled from lava on the surface?
Crystals are generally formed when magma or molten rock cools and solidifies. Rapid cooling of the molten rock generally results in the formation of small crystals, like when magma reaches the surface. However, if they cool down slowly, then large crystals are formed. Keeping heat applied allows more growth on the crystal over time. In that logic, larger crystals grow underground.
Most igneous rocks are formed from hot liquid rock this means they?
have crystals
What kind of crystals are formed when liquid rock cools slowly beneath the earth's surface?
Coarse large grained crystals.
