alb3838464

Anthracite Coal, Pennsylvania

Coal is a black, carbonaceous material that forms as the result of compaction of vegetable debris over long periods of time. Anthracite is a hard, brittle material containing more than 90% carbon. It is lustrous, and burns slowly with a smokeless flame.
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Título:
Anthracite Coal, Pennsylvania
Coal is a black, carbonaceous material that forms as the result of compaction of vegetable debris over long periods of time. Anthracite is a hard, brittle material containing more than 90% carbon. It is lustrous, and burns slowly with a smokeless flame.
Crédito:
Album / Science Source / JOEL AREM
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Modelo: No - Propiedad: No
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Tamaño imagen:
3833 x 2550 px | 28.0 MB
Tamaño impresión:
32.5 x 21.6 cm | 12.8 x 8.5 in (300 dpi)
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