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www.ask.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 primarily made of ...

Mineraloid

en.wikipedia.org/wiki/Mineraloid

For example, obsidian is an amorphous glass and not a crystal. ... Pearl, considered by some to be a mineral because of the presence of calcium ... Jet, non-crystalline nature, organic (very compact...

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....

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? | Yahoo Answers

answers.yahoo.com/question/index?qid=20061011084455AArDlbJ

Oct 11, 2006 ... A Coal is a manufactured product B Coal is NOT inorganic C Coal can exist in liquid form D Coal doesn't have a definite chemical composition.

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

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?

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

www.answers.com/Q/Why_is_coal_not_considered_to_be_a_mineral

Coal is carbon based organic material. Mineral definition requires that material be inorganic with a defined chemical composition and repeating crystalline ...

What Is A Mineral?

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 ...

Is Water a Mineral? -- Is Ice a Mineral? - Geology.com

geology.com/articles/water-mineral/

A natural snowflake would be considered to be a mineral because it forms naturally in Earth's atmosphere. However an ice cube made in a refrigerator would not ...

Popular Q&A
Q: Why is coal not considered a mineral?
A: Coal is not a mineral because it contains primarily organic carbon. In definition of mineral, it says that a mineral must be inorganic. Furthermore, it must be.... Read More »
Source: answers.yahoo.com
Q: Why is coal not considered a mineral.
A: Coal isn't a mineral because it is organic. Minerals are made up of inorganic materials. Read More »
Source: www.answers.com
Q: Help please? 7. Why is coal not considered a mineral?
A: Minerals are normally defined as inorganic. So "A" is the best answer. Answer "C" is the second best answer because coal has varying compositions. Read More »
Source: answers.yahoo.com
Q: Why is coal not considered to be mineral?
A: Coal is not considered a mineral because it is not inorganic; it is made of ancient plant matter that has been compressed over time; therefore, it is carbon bas... Read More »
Source: wiki.answers.com
Q: Why is coal not considered to be a mineral?
A: coal is not inorganic Read More »
Source: wiki.answers.com