No. Andesite is an extrusive rock. Its intrusive equivalent is diorite.
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Andesite is a type of igneous rock that can form both intrusively (inside the Earth's crust) and extrusively (on the Earth's surface). When andesite forms intrusively, it typically cools slowly and can create large crystals.
Andesite is not any age in particular. Some deposites of andesite may be hundreds of millions of years old. However, since andesite is volcanic, some andesite rocks may only be minutes old.
No. It is volcanic. The plutonic equivalent of andesite is diorite.
No. Foliation is a term that applies to metamorphic rocks. Andesite is igneous.
The texture of Andesite rock is fine-grained and it Extrusive plus it is an igneous rock .
Andesite typically has a gray streak color.