Answered
In Geology
How is obsidian formed?
obsidian is a cool name 4 a rock i mean cumon, obsidian its like oblivion its sickk
Results for: Obsidian
Answered
In Geology
Is obsidian dense?
Yes, obsidian is dense. It is, therefore, heavy (compared to Pumice, which can float).
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In Geology
What are the uses of obsidian?
The properties of obsidian made it a valuable commodity for stone age tool makers, as a blade could be fashioned with a sharpness finer than that of any steel, down to nearly …molecular thinness. Professional obsidian knappers can make surgical obsidian knives which can leave a smaller scar than steel knives. Another use of obsidian is as a stone in jewelry. Obsidian is a glasslike volcanic rock that ancient people made arrowheads and spear points from. Some of these are wonderful works of craftsmanship. It has been used to craft tools, historically. Obsidian has also been used to make jewelry. (MORE)
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In Geology
What is obsidian made of?
A usally black mor banded hard volcanic glass that display shiny ,curved surfaces when fracture and rapid cooling lava bye Victoriasometimesright
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In Geology
Where is obsidian from?
obsidian is molten glass from inside a volcano that, when it is expelled from the volcano and cooled down, forms the igneous rock obsidian!
Answered
In Geology
What is obsidian?
A usually black or banded, hard volcanic glass that displays shiny, curved surfaces when fractured and is formed by rapid cooling of lava. The curved fracture surfaces are mo…re correctly termed conchoidal fractures and the "glass" is said to have a "vitreous" texture as the material cools so rapidly that crystals do not have time to form. a kind of mineral that is found in earths crust (MORE)
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In Geology
Is obsidian poisonous?
No. But ingesting fractured obsidian could be harmful to the digestive system. If in doubt, contact a medical professional.
Answered
How is obsidian made and of what?
obsidian is volcanic glass. It happens when water and lava touch, the chemical compound is 70--75% SiO2, plus MgO, Fe3O4
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In Geology
What is the obsidian use for?
It has been used to craft tools, historically. Obsidian has also been used to make jewelry.
Answered
What was obsidian before it was obsidian?
It was liquid rock (magma) which solidified after an extrusion or eruption. Crustal rocks can re-dissolve into magma during subduction of oceanic crust.