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What are some names of extrusive igneous rocks?
== == Rhyolite, basalt, pumice, obsidian, andesite, dacite, tuff, welded tuff, scoria.
How is granite different from scoria pumice and obsidian?
Granite is an igneous rock that is coarse-grained and mainly composed of quartz, feldspar, and mica. Scoria and pumice are volcanic rocks with vesicular textures due to gas bubbles. Obsidian is a natural glass formed from rapidly cooling lava without crystallization.
Obsidian pumice and scoria lack crystals because?
Obsidian lacks crystals because it is a type of volcanic glass that cools too quickly for mineral crystals to form. Pumice and scoria lack crystals due to their porous nature and high gas content, preventing the growth of crystalline structures during cooling.
Why does scoria have a similar texture to pumice but does not float on water like pumice?
Scoria and pumice are both volcanic rocks with gas bubbles trapped in their matrix, giving them a similar porous texture. However, scoria is denser than pumice due to its higher iron and magnesium content, which makes it sink in water whereas pumice, being less dense, floats.
Give 10 examples of igneous rock.?
some examples of igneous rocks are granite,basalt,and rhyolite and driolite
What are some exaples of igneuos rocks?
basalt, granite, rhyolite, andesite, gabbro, obsidian, scoria, pumice.
What are some names of extrusive igneous rocks?
== == Rhyolite, basalt, pumice, obsidian, andesite, dacite, tuff, welded tuff, scoria.
What are some extrusive of igneous rocks?
== == Rhyolite, basalt, pumice, obsidian, andesite, dacite, tuff, welded tuff, scoria.
Name 4 kinds of igneous rocks?
Examples of igneous rocks are pumice, obsidian, basalt, and rhyolite.
How is granite different from scoria pumice and obsidian?
Granite is an igneous rock that is coarse-grained and mainly composed of quartz, feldspar, and mica. Scoria and pumice are volcanic rocks with vesicular textures due to gas bubbles. Obsidian is a natural glass formed from rapidly cooling lava without crystallization.
Is sandstone a scoria granite or pumice?
None of those. Scoria, Pumice and Granite are igneous rocks. Sandstone is sedimentary.
Obsidian pumice and scoria lack crystals because?
Obsidian lacks crystals because it is a type of volcanic glass that cools too quickly for mineral crystals to form. Pumice and scoria lack crystals due to their porous nature and high gas content, preventing the growth of crystalline structures during cooling.
Is the metamorphic rock obsidian or pumice?
Neither. Both pumice and obsidian are igneous.
4 kinds of igneous rocks?
Examples of igneous rocks are pumice, obsidian, basalt, and rhyolite.
Are Scoria and Pumice pyroclastic rocks?
yes
Why is a piece of pumice lighter than a piece of obsidian equal size?
Because pumice is lighter than obsidian always. That means obsidian weighs more than pumice.
Can pumice be red?
No. However there is a similar rock to pumice called scoria, which is sometimes red.
