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From my logic, and the internet, I believe that it is extrusivethat is high in silica.
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12y ago

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Is silica intrusive or extrusive?

The terms intrusive and extrusive apply to the formation of igneous rocks. Silica is a chemical component of a wide variety of minerals found in many types of igneous, metamorphic, and sedimentary rock. All igneous rocks, both intrusive and extrusive, contain silica.


Is basalt an intrusive rock or extrusive rock?

Extrusive. Solidifies above ground level.


Is schist an intrusive or extrusive rock?

Neither, Igneous rock is either intrusive or extrusive. Thats what intrusive and extrusive is... A igneous rock.


Is a metamorphic rock intrusive or extrusive?

It is neither. Intrusive and extrusive are terms used to describe igneous rock.


Is Obsidian an extrusive rock or intrusive rock?

Yes it is extrusive love yall


Are basalt extrusive or intrusive?

Basaltic rock are true to be extrusive rock


Which kind of of igneous has more crystals extrusive or intrusive?

instrusive Rock


Is extrusive a rock?

Igneous rocks can be categorized as either extrusive or intrusive.


Why would you except the crystals in a intrusive rock to be larger than the crystals in a extrusive rock?

Minerals formed in intrusive rock cool more slowly than extrusive rock, which is closer to the surface. The longer cooling period allows more time for crystal formation.


Why would you expect the crystals in an intrusive rock to be larger than the crystals in the extrusive rock?

Because as an intrusive rock cools underground, it will normally cool more slowly than an extrusive (surface) rock. The slow cooling allows more time for the crystals to grow.


What are the types of Igneous rock?

extrusive and intrusive


What are the type of igneous rock?

extrusive and intrusive