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Mineraloid - Wikipedia

en.wikipedia.org/wiki/Mineraloid

A mineraloid is a mineral-like substance that does not demonstrate crystallinity. Mineraloids ... would be better considered a mineraloid because the crystals are bonded by an organic material, and ...

Why is coal not considered a mineral? | Reference.com

www.reference.com/science/coal-considered-mineral-ef84b0efe2ef5c29

Coal is not considered a mineral because it does not have a solid, uniform crystal structure, meaning it doesn't fit the primary definition of a mineral. Coal is ...

Why is coal not a mineral? | Reference.com

www.reference.com/science/coal-mineral-8004ca4ed94e551b

Coal is not a mineral because it is organic, and minerals are inorganic. Minerals have a repeating crystalline structure and a homogeneous chemical profile.

Why is coal not considered a mineral? - Quora

www.quora.com/Why-is-coal-not-considered-a-mineral

If something is to be classified as a mineral, it have to fulfill the following criteria; 1 . Naturally occuring (i.e. it has to form by natural processes) 2. Stable at room ...

Re: If coal is not a mineral because it is organic, why is diamond a ...

www.madsci.org/posts/archives/2003-12/1070390305.Es.r.html

Dec 1, 2003 ... Re: If coal is not a mineral because it is organic, why is diamond a ... In earth materials, it is the "mineraloids," things that look and behave like ...

Coal - Mine Engineer.Com

www.mine-engineer.com/mining/mineral/Coal.htm

A mineral is a naturally occuring, homogeneous, solid with a crystalline atomic ... however both diamonds and graphite are considered minerals, and both are ... Coal is not a mineral, because it can not be expressed as a chemical formula, ...

Why is coal not considered to be a mineral - Answers.com

www.answers.com/Q/Why_is_coal_not_considered_to_be_a_mineral

A2. . A mineral is defined as 'a natural substance of fixed chemical composition, and a highly ordered atomic arrangement.' So coal and glass marbles do not ...

Coal

jersey.uoregon.edu/~mstrick/AskGeoMan/000086_AskGeo.html

What's the deal with coal? ... an organic sedimentary rock, but rocks are combinations of minerals, and minerals are inorganic. Coal is made of decomposed plants, which are organic. ... And anyway, if coal is not a rock, what should we call it?

Is Natural Gas a mineral? | Billman Geologic

billmangeologic.com/2013/03/is-natural-gas-a-mineral/

Mar 2, 2013 ... As a geologist … a scientist (and certainly not a lawyer), we know the answer is, “ No”. ... from the Marcellus Shale and the shale itself are legally considered a mineral. ... Coal can be an economically mineable “mineral”.

What Is A Mineral? - Rocks and Minerals

www.rocksandminerals4u.com/what_is_a_mineral.html

To be considered a mineral it must have been formed by natural geologic processes. ... This classifies it as an organic compound and so is not a mineral. Coal on the other hand also comes from plants (organic) and is generally considered a ...