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What is a glassy rock?
Glassy rocks are rocks that have cooled and solidified quickly, without forming crystals. This rapid cooling prevents mineral crystals from growing, resulting in a smooth and glass-like texture. Obsidian and pumice are examples of glassy rocks.
What are very smooth rocks called?
Very smooth rocks are called "polished rocks" or "river rocks" due to the smooth texture achieved from erosion in water bodies like rivers and oceans.
What color is an obsidian rock?
obsidian rocks are red and black also sometimes orange
What are some names of extrusive igneous rocks?
== == Rhyolite, basalt, pumice, obsidian, andesite, dacite, tuff, welded tuff, scoria.
Igneous rocks that cool quickly on earth surface are?
Igneous rocks that cool quickly on the Earth's surface are called extrusive or volcanic rocks. Examples include basalt, obsidian, and pumice. These rocks have fine-grained textures due to their rapid cooling.
Name 4 kinds of igneous rocks?
Examples of igneous rocks are pumice, obsidian, basalt, and rhyolite.
What does obsidian mean in rocks and minerals?
Obsidian is black glass formed by volcanoes.
Why do obsidian rocks look dark?
because an obsidian rock has low silica
What are rocks that have a glassy texture called?
Obsidian
What type of rocks are pumice obsidian and granite?
Igneous rocks
What is a glassy rock?
Glassy rocks are rocks that have cooled and solidified quickly, without forming crystals. This rapid cooling prevents mineral crystals from growing, resulting in a smooth and glass-like texture. Obsidian and pumice are examples of glassy rocks.
Can obsidian be clear?
In some very rare instances, obsidian can be nearly colorless, but normally it is brown to black.
What are very smooth rocks called?
Very smooth rocks are called "polished rocks" or "river rocks" due to the smooth texture achieved from erosion in water bodies like rivers and oceans.
How long have obsidian rocks been around?
A while.
Is the obsidian trilogy good?
oh it rocks! You have to read it
What is it called when igneous rocks cool quickly?
obsidian
What is a name for volcanic glass?
One word for this is obsidian. Obsidian is a gorgeous hard stone, usually but not always black, and sometimes with iridescent, almost opalescent highlights. Tachylite is also a volcanic glass of basaltic composition.
