20094 - Beautiful Deep Blue Azurite Crystals - Kerrouchen mine (Morocco) Pleuroceras Bulletin of the American Museum

Bulletin of the American Museum of Natural History 300:1-318

and the systematics and ecology of the genus

Wolfgang Stinnesbeck & José Guadalupe López-Oliva (2007): Cranial anatomy of a Maastrichtian (Upper Cretaceous) mosasaur (Squamata

the skeleton has a cartilaginous non-osseous nature

Its enamel has a very intense color

20094 - Beautiful Deep Blue Azurite Crystals - Kerrouchen mine (Morocco) Pleuroceras Bulletin of the American MuseumAzurite 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