Since 2005 the Solfatara crater in Italy has been releasing increased volumes of gas, catching the attention of researchers ...

Calcite and dolomite in sedimentary rocks, like limestone and dolostone, and metamorphic rocks, like marble, are soluble in water and tend to erode quickly. Plutonic and metamorphic rocks are made ...

"So, we see many different kinds of calcite, and that's key to our new approach to mineralogy." ARKENSTONE/Rob Lavinsky Biology and geology: Fossilisation replaced the carbonate in this ammonite's ...