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Mineral like oxides have amorphous stracture.Example alumunium oxide.
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∙ 10y ago
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Why is the mineral opal referred to as a mineraloid?
Opal is an amorphous form of silica related to quartz, a mineraloid form, not a mineral. A mineraloid is a mineral-like substance that does not demonstrate crystallinity.Now you get it?
What is the opals crystals system?
Opal, being amorphous, is not really a mineral but a mineraloid. One of the scientifically accepted standards defining a mineral is that a mineral must have a crystal structure, which opal lacks. Many scientific groups and references, including the acclaimed Dana's System of Mineralogy, categorize Opal together with the "true" minerals. For this reason, Opal -- as well as other amorphous types that fall under the definition of a mineraloid.
What is the difference between a crystaline mineral and an amorphous mineral?
because amorphous solids are that solids that don't have geometrical shape and don't have particular melting point but crystalline solids have characterstic geometrical shape and have sharp melting point.
What type of crystal structure does the opal have?
Opal doesn't have a crystal shape, it's amorphous.
How are the particles in amorphous solid arranged?
Randomly, without an ordered internal structure.
Is calcite a mineral and why?
By definition, a mineral must have a definite crystalline structure. Calcite has this. Glass is amorphous, meaning it does not have such a structure.
How go you get the mineral amber?
Amber is not a mineral, because it has an organic origin and amorphous structure (no orderly internal arrangement of atoms).
Why is the mineral opal referred to as a mineraloid?
Opal is an amorphous form of silica related to quartz, a mineraloid form, not a mineral. A mineraloid is a mineral-like substance that does not demonstrate crystallinity.Now you get it?
A solid material with no crystal structure?
A solid material with no crystal structure is called amorphous.
Are Amorphous metals metallic?
No an amorphous solid is one that does not have a definite crystal structure Example include amorphous carbon and glass.
What is the opals crystals system?
Opal, being amorphous, is not really a mineral but a mineraloid. One of the scientifically accepted standards defining a mineral is that a mineral must have a crystal structure, which opal lacks. Many scientific groups and references, including the acclaimed Dana's System of Mineralogy, categorize Opal together with the "true" minerals. For this reason, Opal -- as well as other amorphous types that fall under the definition of a mineraloid.
Which is an amorphous material?
A solid in which there is no regular repeating structure (no crystals). Glass is a good example of an amorphous solid.
What is an allophane?
An allophane is an amorphous hydrous aluminium silicate clay mineral.
In a sentence amorphous?
The shape of the amorphous material was irregular and lacked a defined structure.
Do amorphous has a specific melting point?
Amorphous means not having a distinctive shape or formless. It is no particular mineral or element there for can have no particular melting point.
What is the difference between a crystaline mineral and an amorphous mineral?
because amorphous solids are that solids that don't have geometrical shape and don't have particular melting point but crystalline solids have characterstic geometrical shape and have sharp melting point.
Why is amber a mineral?
A mineral is a naturally occurring homogeneous solid with a definite chemical composition and ordered crystalline structure. Amber is not a mineral, because it has an organic origin and amorphous structure. Amber is a soft, sticky fossilized tree resin, which has been appreciated for its color and natural beauty since ancient past. I know about this from Drfinejewels.com, which is a good site providing different types and colors of amber stone.
