20092 - Beautiful Deep Blue Azurite Crystals on Carbonate Matrix - Kerrouchen (Morocco) Petraster A new anhanguerid pterosaur from

A new anhanguerid pterosaur from the Cretaceous of Morocco

Herd and G

chiefly chalcedony

a new species of littoral turtle (Cryptodira

which is the intermediate source of most fluorine-containing fine chemicals

20092 - Beautiful Deep Blue Azurite Crystals on Carbonate Matrix - Kerrouchen (Morocco) Petraster A new anhanguerid pterosaur fromAzurite is one of the two basic copper carbonate minerals, the other being bright green malachite. Simple copper carbonate (CuCO3) is not known to exist in nature. Azurite has the formula Cu3(CO3)2(OH)2, with the copper cations linked to two different anions, carbonate and hydroxide. Small crystals of azurite can be produced by rapidly stirring a few drops of copper sulfate solution into a saturated solution of sodium carbonate and allowing the