Limestone: Commodity Overview | Geology for Investors
17/10/2019#0183;#32;Limestone quarry at Robben Island dating back to mid17th Century CC BY Meraj Chhaya on flickr. Limestone is a relatively common sedimentary rock formed from remains of marine organisms such as coral or other invertebrates. Marble is limestone that has been recrystallized through metamorphism and in many applications are interchangeable.