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What kind of igneous rock is obsidian?
Obsidian is an igneous rock. However it differs from other rocks because it contains no minerals. It consists of natural glass, which is not a mineral because it has no crystal structure.Answers from McDougal Littell, Earth Science book
What is the classification of rhyolite?
Felsic extrusive igneous rock. It is the volcanic equivalent of granite.
What is a igneous rock made with volcanic rock with many air holes light enough to float on water?
That is a type of rock called pumice.
What rock is formed from volcanic foam?
Pumice is a type of rock that is formed from volcanic foam. It is light in weight due to the presence of trapped air bubbles and is commonly used in horticulture and as a skin exfoliant.
What are 3 types of ingeous rocks?
Igneous rock is any rock made by the cooling of magma or lava. Igneous rocks come with or without observable crystals that are not in layers or with or without air holes or glasslike. Examples of Igneous rocks are granite, pumice, basalt and apache tears obsidian.
Pumice obsidian and scoria are kinds of?
volcanic rocks formed from different processes. Pumice is a light and porous rock formed from foamy lava, obsidian is a dark volcanic glass formed from quickly cooled lava, and scoria is a dark, vesicular rock formed from gas-rich lava.
What type igneous is pumice intrusive small crystal or extrusive large crystal?
Pumice is an extrusive igneous rock with a large number of small gas bubbles, resulting in its low density and light color. It forms from explosive volcanic eruptions where the lava cools quickly, trapping the gas bubbles within the rock.
What kind of igneous rock is obsidian?
Obsidian is an igneous rock. However it differs from other rocks because it contains no minerals. It consists of natural glass, which is not a mineral because it has no crystal structure.Answers from McDougal Littell, Earth Science book
What volcanic glass is caused by pockets of gas?
Pumice is a volcanic glass that is formed from frothy lava that traps gas as it cools, resulting in a light and porous rock.
What is the classification of rhyolite?
Felsic extrusive igneous rock. It is the volcanic equivalent of granite.
What is a igneous rock made with volcanic rock with many air holes light enough to float on water?
That is a type of rock called pumice.
What rock is formed from volcanic foam?
Pumice is a type of rock that is formed from volcanic foam. It is light in weight due to the presence of trapped air bubbles and is commonly used in horticulture and as a skin exfoliant.
What are 3 types of ingeous rocks?
Igneous rock is any rock made by the cooling of magma or lava. Igneous rocks come with or without observable crystals that are not in layers or with or without air holes or glasslike. Examples of Igneous rocks are granite, pumice, basalt and apache tears obsidian.
How did the volcanic glass Perlite form?
Perlite is formed when water trapped in volcanic material vaporizes. This expands the material by up to 16 times its size, becoming light and absorbent.
What is a very light igneous rock containing air bubbles?
Pumice is a very light igneous rock that contains numerous air bubbles. It is formed during volcanic eruptions when frothy lava cools rapidly, trapping gas bubbles within the rock's structure.
Is pluton a volcanic rock?
I learned about this when I was in the seventh grade. Pumice is volcanic. It was made by nature when lava and gases was thrown out of a volcano. As the gas bubbles escaped from the lava, it become frothy. When the lava cooled and hardened, the result was a very light rock material filled with tiny bubbles of gas.
How does the density of a light colored igneous rock differ from that of a dark colored igneous rock?
Normally, light colored igneous rocks are less dense compared to dark colored igneous rocks. This is because the light colored rocks have a less iron in them.
