Although coal is sometimes considered a mineral, which criteria of minerals does it violate? . a. minerals are solids. . b. minerals are natural. . c. minerals are inorganic. . d. minerals have a definite chemical composition.

Coal is not a mineral. It is a sedimentary rock or, in the case of butiminous coal, a metamorphic rock. The answerers above are correct. Organic is probably the answer that is sought. Coal is more like a random arrangement of microcrystals of large organic molecules. The fact that it has a variable composition and structure also causes it to violate the standard definition of mineral.minerals are inorganic

The criteria of minerals that coal violates is : C. Minerals are inorganic

One of the characteristic of Coal is it contain Carbon. And the substance that contain Carbon is considered as organic substance.

hope this helps

Elias is almost correct. he just got it backwards.the correct answer is that it demonstrates elastic potential energy transforming into kinetic energy.