Category:Coal balls
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stone of peat that did not turn into coal  | |||||
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Media in category "Coal balls"
The following 5 files are in this category, out of 5 total.
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Coal ball from southern illinois 2.JPG 2,528 × 2,120; 1.69 MB
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Coal ball from southern illinois.JPG 2,480 × 2,432; 2.29 MB
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Coal ball structures.jpg 400 × 266; 73 KB
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Coal ball thin section1.jpg 640 × 480; 55 KB
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Coalball.jpg 640 × 482; 38 KB
