21198 - Beautiful Azurite Cristals + Malachite Cristals in Quartz Matrix - Alnif (South Morocco) Graptolites The last feature makes a

The last feature makes a significant difference in relation to teeth of the genus Liodon Agassiz

while the edges of the stone have been left in its raw state

Cephalopoda - Ammonitida - Vascoceratidae

Enchodus longipectoralis

21198 - Beautiful Azurite Cristals + Malachite Cristals in Quartz Matrix - Alnif (South Morocco) Graptolites The last feature makes aAzurite 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