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No. Obsidian is not crystalline so is not a mineral. It forms from the extremely rapid cooling of lava which means that crystals do not have time to form. This is described as a vitreous or glassy texture.
Wiki User
∙ 13y ago
Wiki User
∙ 13y agoThere are no minerals in obsidian. Minerals must have a crystalline structure. Because obsidian cooled so rapidly after eruption, crystals had no time to form, creating a volcanic glass instead. If the lava had been able to form crystals, they would have been mostly silicate in nature, like quartz, feldspars, and micas.
Wiki User
∙ 7y agoNo. By definition, a mineral must have a regular crystalline strucure. Obsidian does not have such a structure.
Wiki User
∙ 15y agoObsidian is not a mineral.
Wiki User
∙ 13y agoIt is an igneous rock.
Wiki User
∙ 10y agoyes all kinds
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What are 3 examples of mineraloid?
Mineraloids are a mineral like substance that don't exhibit crystallinity. 5 Examples: mercury pearl obsidian anthracite jet
Which rock has large mineral grains granite obsidian basalt or pumice?
Granite
Why does obsidian contain few or no mineral grains?
The material that would normally form mineral crystals does not have time to form a crystalline structure because of very rapid cooling after volcanically erupting into the air or onto the surface. Obsidian is a volcanic glass.
Are rocks composed of minerals?
Rocks are for the most part composed of one or more minerals. Obsidian is an exception because the mineral solution (lava) did not have time to form mineral crystals because of very rapid cooling. However, most obsidian will still contain some mineral crystals or crystal inclusions.
What is the Mohs hardness of obsidian?
Strictly speaking obsidian is not a rock as it is not composed of crystals so can't be mineralic! It is technically a volcanic glass. It's Moh's hardness is approximately 5-6 according to the Wikipedia entry for Obsidian although an exact value would depend on the exact composition of the Obsidian in question.
What are the minerals in obsidian?
Obsidian is, itself, a mineral.
What are 3 examples of mineraloid?
Mineraloids are a mineral like substance that don't exhibit crystallinity. 5 Examples: mercury pearl obsidian anthracite jet
What is the origin Obsidian?
The origin is from medievil english. By the way, obsidian is a black mineral.
Is obsidian an element or compound?
Neither. It is a mineral mixture.
Does obsidian rock contain few or no mineral grains?
That is correct.
What mineral can be easily identified by it's color?
Obsidian because it's the only mineral that is the blackest of well......black! Anyway it's black I mean Obsidian (\_/) (o.o) (___)o
Why is the texture of obsidian is best contain few or no minerals grains?
Obsidian cools so quickly the mineral grains do not have time to form.
Is obsidian is harder than diamond?
No, diamond is the hardest known mineral.
Is diamond stronger or obsidian?
Diamond is the hardest natural mineral known.
Why not is a piece of glass a mineral?
Glass doesn't have a crystalline structure, or a specific chemical composition, so it is not a mineral. Obsidian is not a mineral for the same reason.
What crystal group is obsidian in?
No one knows my namestake like I do (except Crystallography majors) and in reality obsidian is not quite classified as a type of crystal at all, as its composition is too complex to comprise a single mineral, it's usually just considered a mineraloid.
Which rock has large mineral grains granite obsidian basalt or pumice?
Granite
