A hard; shiny and carbon-rich organic rock that burns smokelessly is? by Sunday | Dec 25 | Geography JAMB | 0 comments A. peat B. rhyolite C. marble D. anthracite Correct Answer: Option D – anthracite Users Also Read These:Sulphur burns in air to form?Which of the following best explains a person…A printer that burns the print image into the…A basin where rock layers have been folded and in…When magnesium ribbon burns in air, the products are?