Virtual Collection: Chemical and Organic Sedimentary Rocks — Earth@Home
Chalk: A biological limestone formed from shell debris
Chalk | Properties, Composition, Formation and Uses
Metamorphic rock - Wikipedia
What is the most abundant metamorphic rock? - Quora
BROOKLYN COLLEGE - EARTH AND ENVIRONMENTAL SCIENCES -ROCKS
Chalk is a soft, white, porous sedimentary rock, a form of #limestone composed of the mineral calcite. #Calcite is calcium ca… | Limestone rock, Chalk, Sedimentary