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Obsidian is volcanic glass. unusually amongst the various rocks and minerals it is made of one single piece with no individual grains. this is due to it being cooled extremly rapidly from a magma (most commonly into a cool sea.) the dark colour is caused by heavy amounts of included minerals.
What else can I help you with?
Is obsidian malleable?
No. Obsidian is brittle.
What is a type of obsidian?
One type of obsidian is snowflake obsidian, which is black with white mineral inclusions that resemble snowflakes.
What are the minerals in obsidian?
Obsidian is, itself, a mineral.
Is obsidian a crystal?
yes obsidian is a crystal.
Is obsidian glass?
Obsidian is a natural glass.
Is obsidian metamorphic igneous or sedimentary?
Obsidian is an igneous rock.
What is the scientific name for obsidian?
Other names for obsidian is Apache tears, volcanic glass, and Black obsidian.
Are obsidian attracted to magnet?
Obsidian is not magnetic.
How is obsidian dependent to minerals?
how is obsidian dependent on minerals
What is the obsidian called when it has white stuff in it?
Snowflake Obsidian
Should companies buy obsidian?
If their business is in dealing with obsidian products, and they do not own any obsidian mines, then yes they will need to buy it. If however they do not need obsidian then they do not have to buy it.
Why would you not expect to find obsidian deep in the recesses of the earth?
Obsidian is another name for "volcanic glass". For a glass to form the molten lava must be cooled very, very quickly. The deep recesses of the Earth are not cold, they are warm and this means that molten lave intruded into the deep recesses of the Earth will not cool quickly and thus Obsidian can never form in these conditions. Obsidian can only form at the surface. However, there is one other way for a glass to be produced in Geology and that is by the heating generated by friction during a fault movement. This type of glass is called a "pseudotachylyte". These ARE generated in the deep recesses of the Earth.
