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i found three pieces in hummelstown, pa
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∙ 9y ago
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When magma cools earth's surface what type of crystalline structure is usually found?
obsidian
Is obsidian rare or very common?
Obsidian (volcanic glass) is unstable and it de-vitrifies (crystallizes) with time, it is also only produced from viscous, acidic lavas. You would therefore look for it in recently produced lavas in continental volcanoes. Thus while obsidian is not uncommon, it does not last very long geologically. Where it is found it is found in large amounts.
A black rock formed from cooled lava?
Obsidian
Is obsidian malleable?
No. Obsidian is brittle.
What is a type of obsidian?
Mahogany Obsidian
Is obsidian rock found in mountains?
Yes, obsidian is found near volcanic mountains.
Are phenocrysts likely to be found in obsidian?
No they are not.
How do you you mine obsidian and how do you make a nether portal in minecraft?
Obsidian is found in really deep creeper caves with magma and water. Magma + Water = Obsidian You need a 3x5 rectangle of obsidian and light it with flint and stone.
Could phenocrysts be found in an obsidian?
No, phenocrysts are typically minerals that form in slowly cooling magma and are therefore not found in obsidian, which is a type of igneous rock that cools quickly, resulting in a glassy texture without crystal growth.
Where do you find obsidian in minecraft?
Obsidian is usually found in caves underground where flowing water hits still lava.
Can a obsidian rock be found in Louisiana?
No, obsidian is also called 'volcanic glass,' since it is a product of cooled lava. Since there are no volcanoes in Louisiana there will not be any natural obsidian.
Why was obsidian discovered?
Someone found it centuries ago.
Is obsidian found anywhere in upstate new york?
My 8 year old found a large piece of obsidian in dansville ny this weekend. We are amazed by its size and beauty
Where is obsidian found in Australia?
Yes, it is found in Australia. You can eat it too! OMNOMNOMNOM
Is obsidian rock or gemstone?
Obsidian is an extrusive igneous rock. Volcanic in origin, it is very common in recent lava flows. Obsidian is primarily made of glass. Obsidian is amorphous, lacking any crystal structure found in gemstones. For more details, try asking the question - "What is obsidian"
Where does obsidian rock cools down?
Obsidian is an glassy, extrusive, igneous rock that is found in areas that have experienced rhyolitic eruptions. Obsidian is formed when the rhyolitic lava comes into contact with water. This quick-cooling results in the glassy texture of obsidian.
How does mining obsidian affect the environment and economy of where it is found?
you are verd
