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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 solution to stand overnight
Enchodus gracilis
Trilobita - Asaphida - Cyclopygidae
carbonate (6)
08291 - Great Collection of 3 Elasmosaur (Zarafasaura oceanis) Teeth Ceratodus Small crystals of azurite canIt is a well preserved collection of 3 teeth. The color of its enamel varies between tones of cream and brown. Some of them have some glued or restored (filled) fractures. Elasmosaurus teeth from the Upper Cretaceous from the Oulad Abdoun Basin are relatively more scarce than the Mosasaurus. This huge and famous marine reptile is characterized by its long and stylized neck. Its morphology enabled it being a very specialized marine predator. Until
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